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I am just restarting work on a project I haven't touched in 12 months and I have noticed that my epoxy is 10 months over the expiry date. 
  
How important it this? Does it matter? 
  
Cheers and thanks for any help, 
  
Pram Man"name=description><title>
   epoxy use by date
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Does it matter? <br><br> Cheers and thanks for any help, <br><br> Pram Man</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2363855 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2363855 id=qrwq_2363855 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2363855 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2363894><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 10-26-2009,  <span class=time> 10:05 AM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2363894#post2363894 name=post2363894> #2 </a> <a id=postcount2363894 name=2> </a> </span></div><div class=userinfo><div class=contact><a title="katiedobe is offline"class=postuseravatarlink href=member.php?10292-katiedobe&s=456935451274504a3037ef8f6cdffb00> <img alt="katiedobe's Avatar"src=image.php?s=456935451274504a3037ef8f6cdffb00&u=10292&dateline=1148668683> </a><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="katiedobe is offline"href=member.php?10292-katiedobe&s=456935451274504a3037ef8f6cdffb00> <strong> katiedobe </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?10292-katiedobe&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=10292&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=10292 rel=nofollow> Private Message </a><li class=left><a class=siteicon_homepage href=http://none> Visit Homepage </a></ul></div><img alt="katiedobe is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Jun 2005<dt>Location<dd>Bacalar, Mexico<dt>Posts<dd>839</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2363894><blockquote class="postcontent restore">What brand are you talking about? <br><br> I did not know that epoxy had experiton dates. My two part stuff does not go bad as long as it is kept from freezing. I have used West sytem, and System three that have sat on the shelf for years in my wooden door making business and never have I had it fail to go off. <br><br> You should mix up a small batch and glue two pieces of wood together, maybe a butt joint, the weakest joint and then try to break it and see what fails. The glue or the wood. I think that if they react correctly after mixing and pass the strength test you should be good to go. <br><br> Maybe the expiration date is just there to sell more material or because a law states that all chemicals must have an expiration date on them. Kinda like medicines, even though homeopathic meds don't expire, ever, they can't they are only sugar pills with energy connected to them. <br><br> There are much more knowledgable chemists here on the web who may answer better and know way more than I do. But please what is the brand of epoxy?</blockquote></div></div><blockquote class="signature restore"><div class=signaturecontainer>Jimmy <br> __________ <br> Loving Living on Lake Bacalar.</div></blockquote></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2363894 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2363894 id=qrwq_2363894 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2363894 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2364089><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 10-26-2009,  <span class=time> 01:28 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2364089#post2364089 name=post2364089> #3 </a> <a id=postcount2364089 name=3> </a> </span></div><div class=userinfo_noavatar><div class=contact><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="Pram Man is offline"href=member.php?18585-Pram-Man&s=456935451274504a3037ef8f6cdffb00> <strong> Pram Man </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?18585-Pram-Man&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=18585&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=18585 rel=nofollow> Private Message </a></ul></div><img alt="Pram Man is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Junior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Nov 2007<dt>Location<dd>Southern Germany<dt>Posts<dd>24</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2364089><blockquote class="postcontent restore">Looks like I have nothing to worry about then. <br><br> I think you're right, the expiry date must be something to do with some formal or legal requirements. <br><br> By the way, it's West Sytem, and there is not a word about the significance of the expiry date in the little handbook included with the bottles. <br><br> Cheers, <br><br> Pram Man <br><br> PS I also got a PM about someone successfully using 28-year-old epoxy <img alt border=0 class=inlineimg src=images/smilies/eek.png title=EEK!></blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2364089 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2364089 id=qrwq_2364089 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2364089 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2364097><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 10-26-2009,  <span class=time> 01:36 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2364097#post2364097 name=post2364097> #4 </a> <a id=postcount2364097 name=4> </a> </span></div><div class=userinfo><div class=contact><a title="Candyfloss is offline"class=postuseravatarlink href=member.php?24203-Candyfloss&s=456935451274504a3037ef8f6cdffb00> <img alt="Candyfloss's Avatar"src=image.php?s=456935451274504a3037ef8f6cdffb00&u=24203&dateline=1261772331> </a><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="Candyfloss is offline"href=member.php?24203-Candyfloss&s=456935451274504a3037ef8f6cdffb00> <strong> Candyfloss </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?24203-Candyfloss&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=24203&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=24203 rel=nofollow> Private Message </a></ul></div><img alt="Candyfloss is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Apr 2009<dt>Location<dd>Thames, N.Z.<dt>Posts<dd>2,080</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2364097><blockquote class="postcontent restore">The hardener may however discolour over time. It still works. Also I have had aged epoxy that crystalized. Stir vigorously & use.</blockquote></div></div><blockquote class="signature restore"><div class=signaturecontainer><span style="font-family: Comic Sans MS"> Keep It Simple: KISS it better. <img title="Yellow Smile"alt border=0 class=inlineimg src=images/smilies/icon7.png> </span></div></blockquote></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2364097 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2364097 id=qrwq_2364097 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2364097 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2364151><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 10-26-2009,  <span class=time> 02:16 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2364151#post2364151 name=post2364151> #5 </a> <a id=postcount2364151 name=5> </a> </span></div><div class=userinfo><div class=contact><a title="Lewisboats is offline"class=postuseravatarlink href=member.php?5655-Lewisboats&s=456935451274504a3037ef8f6cdffb00> <img alt="Lewisboats's Avatar"src=image.php?s=456935451274504a3037ef8f6cdffb00&u=5655&dateline=1144416426> </a><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="Lewisboats is offline"href=member.php?5655-Lewisboats&s=456935451274504a3037ef8f6cdffb00> <strong> Lewisboats </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?5655-Lewisboats&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=5655&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=5655 rel=nofollow> Private Message </a></ul></div><img alt="Lewisboats is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Obsessed Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Sep 2002<dt>Location<dd>Sioux City, IA<dt>Posts<dd>1,121</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2364151><blockquote class="postcontent restore">Crystallized epoxy can be gotten clear by warming to around 110-120 deg. I have cleared it by nuking it for 10 sec intervals in small batches. Usually only the resin crystallizes...the hardener only gets darker with age and gives the mix an amber color.</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2364151 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2364151 id=qrwq_2364151 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2364151 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2364180><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 10-26-2009,  <span class=time> 02:37 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2364180#post2364180 name=post2364180> #6 </a> <a id=postcount2364180 name=6> </a> </span></div><div class=userinfo_noavatar><div class=contact><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="keith66 is offline"href=member.php?18017-keith66&s=456935451274504a3037ef8f6cdffb00> <strong> keith66 </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?18017-keith66&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=18017&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=18017 rel=nofollow> Private Message </a></ul></div><img alt="keith66 is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Sep 2007<dt>Location<dd>Benfleet Essex UK<dt>Posts<dd>470</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2364180><blockquote class="postcontent restore">It would be wise to test some first, West hardener degrades with age & gets much darker, also you may get a pronounced ammonia smell which may signify chemical changes, would you trust it? <br> I used some two pack epoxy pitch paint years ago to paint a customers skeg & rudder i had rebuilt (on a tupperware boat) that paint was well out of date & stubbornly refused to cure, a week later i had to scrape & wash the **** off with gunwash. Taught me an expensive lesson!</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2364180 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2364180 id=qrwq_2364180 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2364180 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371271><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-01-2009,  <span class=time> 10:23 AM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371271#post2371271 name=post2371271> #7 </a> <a id=postcount2371271 name=7> </a> </span></div><div class=userinfo><div class=contact><a title="katiedobe is offline"class=postuseravatarlink href=member.php?10292-katiedobe&s=456935451274504a3037ef8f6cdffb00> <img alt="katiedobe's Avatar"src=image.php?s=456935451274504a3037ef8f6cdffb00&u=10292&dateline=1148668683> </a><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="katiedobe is offline"href=member.php?10292-katiedobe&s=456935451274504a3037ef8f6cdffb00> <strong> katiedobe </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?10292-katiedobe&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=10292&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=10292 rel=nofollow> Private Message </a><li class=left><a class=siteicon_homepage href=http://none> Visit Homepage </a></ul></div><img alt="katiedobe is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Jun 2005<dt>Location<dd>Bacalar, Mexico<dt>Posts<dd>839</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371271><blockquote class="postcontent restore">I have successfuly used West system that was at least five years old. Kept in the can tightly closed, had to use pliers to get the lid off. <br> The color was a darker red color, almost burnt sienna. But it cured up just fine. <br> Now I am going to go look and see if I can find use before date on the can, just curious.</blockquote></div></div><blockquote class="signature restore"><div class=signaturecontainer>Jimmy <br> __________ <br> Loving Living on Lake Bacalar.</div></blockquote></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371271 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371271 id=qrwq_2371271 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371271 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371457><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-01-2009,  <span class=time> 01:57 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371457#post2371457 name=post2371457> #8 </a> <a id=postcount2371457 name=8> </a> </span></div><div class=userinfo_noavatar><div class=contact><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="andrewe is offline"href=member.php?12600-andrewe&s=456935451274504a3037ef8f6cdffb00> <strong> andrewe </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?12600-andrewe&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=12600&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=12600 rel=nofollow> Private Message </a></ul></div><img alt="andrewe is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Sep 2006<dt>Location<dd>S.W. France<dt>Posts<dd>1,058</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371457><blockquote class="postcontent restore">This came up before, and numerous users came out of the (composite) woodwork to say how they used stuff that was well past the use-by-date. Some, south of the equater, said theirs was supplied with dark (ie old) hardener as fresh stock. Many talked of 5yr plus use. I have some 10yr old SP that I might use for graphite coating of the plate case,,,after a test. <br> A</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371457 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371457 id=qrwq_2371457 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371457 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371462><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-01-2009,  <span class=time> 02:10 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371462#post2371462 name=post2371462> #9 </a> <a id=postcount2371462 name=9> </a> </span></div><div class=userinfo_noavatar><div class=contact><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="MikeWoodhinge is offline"href=member.php?26031-MikeWoodhinge&s=456935451274504a3037ef8f6cdffb00> <strong> MikeWoodhinge </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?26031-MikeWoodhinge&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=26031&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=26031 rel=nofollow> Private Message </a></ul></div><img alt="MikeWoodhinge is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Junior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Oct 2009<dt>Posts<dd>6</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371462><blockquote class="postcontent restore"><font color=black> <span style="font-family: Verdana"> One serious thing to consider is how much the epoxy strength is affected by the age of the mix. While the chemical reaction will continue to take place with most multi-part epoxy formulas, the tensile strength tends to decrease with age. Since we are using epoxy for both its convenience and its strength, I'd be real sure to consult the manufacturer in regards to a strength curve vs. age. </span> </font><br></blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371462 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371462 id=qrwq_2371462 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371462 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371476><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-01-2009,  <span class=time> 02:49 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371476#post2371476 name=post2371476> #10 </a> <a id=postcount2371476 name=10> </a> </span></div><div class=userinfo_noavatar><div class=contact><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="Mike Vogdes is offline"href=member.php?1036-Mike-Vogdes&s=456935451274504a3037ef8f6cdffb00> <strong> Mike Vogdes </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?1036-Mike-Vogdes&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=1036&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=1036 rel=nofollow> Private Message </a></ul></div><img alt="Mike Vogdes is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Jan 2000<dt>Location<dd>Egg Harbor Twp, NJ<dt>Posts<dd>1,501</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Talking src=images/icons/icon10.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371476><blockquote class="postcontent restore"><div class=bbcode_container><div class=bbcode_quote><div class=quote_container><div class=bbcode_quote_container></div><div class=bbcode_postedby><img alt=Quote src=images/misc/quote_icon.png> Originally Posted by <strong> Pram Man </strong><a href=showthread.php?s=456935451274504a3037ef8f6cdffb00&p=2363855#post2363855 rel=nofollow> <img alt="View Post"class=inlineimg src=images/buttons/viewpost-right.png> </a></div><div class=message>Hi all, <br><br> I am just restarting work on a project I haven't touched in 12 months and I have noticed that my epoxy is 10 months over the expiry date. <br><br> How important it this? Does it matter? <br><br> Cheers and thanks for any help, <br><br> Pram Man</div></div></div></div> You have nothing to worry about, go ahead and use it. This question has come up a thousand times over the years. WEST System lasts a long long time. Keep your pumps clean and seal the cans real good for long term storage and most important get the boat done...</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371476 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371476 id=qrwq_2371476 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371476 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371481><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-01-2009,  <span class=time> 02:57 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371481#post2371481 name=post2371481> #11 </a> <a id=postcount2371481 name=11> </a> </span></div><div class=userinfo_noavatar><div class=contact><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="Simon R is offline"href=member.php?24291-Simon-R&s=456935451274504a3037ef8f6cdffb00> <strong> Simon R </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?24291-Simon-R&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=24291&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=24291 rel=nofollow> Private Message </a><li class=left><a class=siteicon_homepage href=http://www.ceze.net> Visit Homepage </a></ul></div><img alt="Simon R is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Apr 2009<dt>Location<dd>Ipswich, Suffolk<dt>Posts<dd>44</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371481><blockquote class="postcontent restore">Had some problems with stuff we kept in an open cup overnight. If it's at all cloudy there's probably water in it and it cannot be used. The slightest condensation can do it. Now we decant what we need from the big cans into plastic pots with screw on lids, the sort used to keep food fresh(ish).</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371481 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371481 id=qrwq_2371481 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371481 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371557><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-01-2009,  <span class=time> 05:16 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371557#post2371557 name=post2371557> #12 </a> <a id=postcount2371557 name=12> </a> </span></div><div class=userinfo><div class=contact><a title="gazzer is offline"class=postuseravatarlink href=member.php?22680-gazzer&s=456935451274504a3037ef8f6cdffb00> <img alt="gazzer's Avatar"src=image.php?s=456935451274504a3037ef8f6cdffb00&u=22680&dateline=1451316116> </a><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="gazzer is offline"href=member.php?22680-gazzer&s=456935451274504a3037ef8f6cdffb00> <strong> gazzer </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?22680-gazzer&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=22680&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=22680 rel=nofollow> Private Message </a></ul></div><img alt="gazzer is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Oct 2008<dt>Location<dd>Durham, NC<dt>Posts<dd>143</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371557><blockquote class="postcontent restore">I have some leftover WEST resin and hardener that is close to 20 years old and it seems to work fine (i.e. I mix it in the correct ratio and it hardens up quite well). Because of its age, though, I tend not to use it for anything structurally critical. A few quick tests show that the glue joint is still stronger than the wood. <br><br> I would have no problem with goop that's only 10 months past prime. Just conjecture, but I'm guessing the expiration dates are either to relieve the supplier of liability, or to sell more product. <br><br> -G</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371557 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371557 id=qrwq_2371557 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371557 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371595><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-01-2009,  <span class=time> 06:22 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371595#post2371595 name=post2371595> #13 </a> <a id=postcount2371595 name=13> </a> </span></div><div class=userinfo_noavatar><div class=contact><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="Mike Vogdes is offline"href=member.php?1036-Mike-Vogdes&s=456935451274504a3037ef8f6cdffb00> <strong> Mike Vogdes </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?1036-Mike-Vogdes&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=1036&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=1036 rel=nofollow> Private Message </a></ul></div><img alt="Mike Vogdes is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Jan 2000<dt>Location<dd>Egg Harbor Twp, NJ<dt>Posts<dd>1,501</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371595><blockquote class="postcontent restore">I suspect the expiration date would have something to do with the hardener getting dark in color as it ages, making tinting your epoxy that much more difficult. But I'm just guessing...</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371595 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371595 id=qrwq_2371595 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371595 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371683><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-01-2009,  <span class=time> 08:26 PM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371683#post2371683 name=post2371683> #14 </a> <a id=postcount2371683 name=14> </a> </span></div><div class=userinfo><div class=contact><a title="paladin is offline"class=postuseravatarlink href=member.php?2600-paladin&s=456935451274504a3037ef8f6cdffb00> <img alt="paladin's Avatar"src=image.php?s=456935451274504a3037ef8f6cdffb00&u=2600&dateline=1203006529> </a><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="paladin is offline"href=member.php?2600-paladin&s=456935451274504a3037ef8f6cdffb00> <strong> paladin </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?2600-paladin&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=2600&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=2600 rel=nofollow> Private Message </a></ul></div><img alt="paladin is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Dec 2000<dt>Location<dd>Chesapeake Beach, Md 20732 U.S.A.<dt>Posts<dd>26,724</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371683><blockquote class="postcontent restore">I have sucessfully used several different epoxies well past the published expiration dates....in southeast asia.....test it first, but if the containers were sealed to start with, then you are probably safe. If the containers have been repeatedly opened and closed, I would be a bit cautious.</blockquote></div></div><blockquote class="signature restore"><div class=signaturecontainer>Wakan Tanka Kici Un <br> ..a bad day sailing is a heckuva lot better than the best day at work..... <br> Fighting Illegal immigration since 1492.... <br> Live your life so that whenever you lose, you're ahead." <br> "If you live life right, death is a joke as far as fear is concerned."</div></blockquote></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371683 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371683 id=qrwq_2371683 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371683 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr><li class="postbit postbitim postcontainer old"id=post_2371935><div class=postdetails_noavatar><div class=posthead><span class="postdate old"> <span class=date> 11-02-2009,  <span class=time> 03:15 AM </span> </span> </span><span class=nodecontrols> <a class=postcounter href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00&p=2371935#post2371935 name=post2371935> #15 </a> <a id=postcount2371935 name=15> </a> </span></div><div class=userinfo><div class=contact><a title="landlocked sailor is offline"class=postuseravatarlink href=member.php?586-landlocked-sailor&s=456935451274504a3037ef8f6cdffb00> <img alt="landlocked sailor's Avatar"src=image.php?s=456935451274504a3037ef8f6cdffb00&u=586&dateline=1156371016> </a><div class=username_container><div class="popupmenu memberaction"><a class="username offline popupctrl"title="landlocked sailor is offline"href=member.php?586-landlocked-sailor&s=456935451274504a3037ef8f6cdffb00> <strong> landlocked sailor </strong> </a><ul class="popupbody popuphover memberaction_body"><li class=left><a class=siteicon_profile href=member.php?586-landlocked-sailor&s=456935451274504a3037ef8f6cdffb00> View Profile </a><li class=right><a class=siteicon_forum href=search.php?s=456935451274504a3037ef8f6cdffb00&do=finduser&userid=586&contenttype=vBForum_Post&showposts=1 rel=nofollow> View Forum Posts </a><li class=left><a class=siteicon_message href=private.php?s=456935451274504a3037ef8f6cdffb00&do=newpm&u=586 rel=nofollow> Private Message </a></ul></div><img alt="landlocked sailor is offline"class="inlineimg onlinestatus"border=0 src=images/statusicon/user-offline.png><span class=usertitle> Senior Member </span><div class=imlinks></div></div></div><div class=userinfo_extra><dl class=userstats><dt>Join Date<dd>Sep 1999<dt>Location<dd>Muncy, PA, USA<dt>Posts<dd>1,873</dl></div></div></div> <div class=postbody><div class=postrow><h2 class="posttitle icon"><img alt=Default src=images/icons/icon1.png> Re: epoxy use by date</h2><div class=content><div id=post_message_2371935><blockquote class="postcontent restore">I had some of Paul Oman's Basic No-Blush from 2003. The resin was solidified into a soft wax consistency. I heated it in a double boiler and it was good as new. Rick</blockquote></div></div></div></div> <div class=postfoot><div class="textcontrols floatcontainer"><span class=postcontrols> <img alt id=progress_2371935 src=images/misc/progress.gif style=display:none> <a title="Reply With Quote"class=newreply href=newreply.php?s=456935451274504a3037ef8f6cdffb00&do=newreply&p=2371935 id=qrwq_2371935 rel=nofollow> <img alt="Reply With Quote"id=quoteimg_2371935 src=clear.gif> Reply With Quote </a> </span><span class=postlinking> </span></div></div> <hr></ol><div class=separator></div><div class=postlistfoot></div></div><div class="noinlinemod below_postlist"id=below_postlist><div class=pagination_bottom id=pagination_bottom><div class=clear></div><div class="navpopupmenu popupmenu nohovermenu"id=showthread_navpopup><span class=shade> Quick Navigation </span><a class=popupctrl href=showthread.php?104472-epoxy-use-by-date&s=456935451274504a3037ef8f6cdffb00> <span class=ctrlcontainer> Building / Repair </span> </a><a onclick="document.location.hash='top';return false;"class=textcontrol href=showthread.php?104472-epoxy-use-by-date#top> Top </a><ul class="navpopupbody popupbody popuphover"><li class=optionlabel>Site Areas<li><a href=usercp.php?s=456935451274504a3037ef8f6cdffb00> Settings </a><li><a href=private.php?s=456935451274504a3037ef8f6cdffb00> Private Messages </a><li><a href=subscription.php?s=456935451274504a3037ef8f6cdffb00> Subscriptions </a><li><a href=online.php?s=456935451274504a3037ef8f6cdffb00> Who's Online </a><li><a href=search.php?s=456935451274504a3037ef8f6cdffb00> Search Forums </a><li><a href=index.php?s=456935451274504a3037ef8f6cdffb00> Forums Home </a><li class=optionlabel>Forums<li><a href=forumdisplay.php?1-Building-Repair&s=456935451274504a3037ef8f6cdffb00> Building / Repair </a><li><a href=forumdisplay.php?2-Designs-Plans&s=456935451274504a3037ef8f6cdffb00> Designs / Plans </a><li><a href=forumdisplay.php?3-People-amp-Places&s=456935451274504a3037ef8f6cdffb00> People & Places </a><li><a href=forumdisplay.php?9-WoodenBoat-Magazine&s=456935451274504a3037ef8f6cdffb00> WoodenBoat Magazine </a><li><a href=forumdisplay.php?4-Tools-Materials-Techniques-Products&s=456935451274504a3037ef8f6cdffb00> Tools / Materials / Techniques / Products </a><li><a href=forumdisplay.php?6-Misc-Boat-Related&s=456935451274504a3037ef8f6cdffb00> Misc. 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