{"action":"created","issue":{"url":"https://api.github.com/repos/prusa3d/Prusa-Firmware/issues/602","repository_url":"https://api.github.com/repos/prusa3d/Prusa-Firmware","labels_url":"https://api.github.com/repos/prusa3d/Prusa-Firmware/issues/602/labels{/name}","comments_url":"https://api.github.com/repos/prusa3d/Prusa-Firmware/issues/602/comments","events_url":"https://api.github.com/repos/prusa3d/Prusa-Firmware/issues/602/events","html_url":"https://github.com/prusa3d/Prusa-Firmware/issues/602","id":311711203,"number":602,"title":"Inconsistent Extrusion","user":{"login":"ff8jake","id":8582658,"avatar_url":"https://avatars3.githubusercontent.com/u/8582658?v=4","gravatar_id":"","url":"https://api.github.com/users/ff8jake","html_url":"https://github.com/ff8jake","followers_url":"https://api.github.com/users/ff8jake/followers","following_url":"https://api.github.com/users/ff8jake/following{/other_user}","gists_url":"https://api.github.com/users/ff8jake/gists{/gist_id}","starred_url":"https://api.github.com/users/ff8jake/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ff8jake/subscriptions","organizations_url":"https://api.github.com/users/ff8jake/orgs","repos_url":"https://api.github.com/users/ff8jake/repos","events_url":"https://api.github.com/users/ff8jake/events{/privacy}","received_events_url":"https://api.github.com/users/ff8jake/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1098,"created_at":"2018-04-05T17:59:31Z","updated_at":"2018-05-23T21:00:32Z","closed_at":null,"author_association":"NONE","body":"@XPila - Sorry for calling you out on this, just figured since you seem to be the one working on the linearity corrections and such you'd be the best in the know on this one.\r\n\r\nWe're seeing really inconsistent extrusion, beyond the moire effect that we were trying to fix with linearity correction. Do you know if they are related? I have tested a 40mm single wall cube with no infill, then cut it with scissors. Within a single wall on a single later, I have found my extrusion width getting wider/narrower (and only one extrusion command in the gcode for the entire wall). I also confirmed that where it becomes fatter happens on both the outside and the inside of the print, so this doesn't seem to be X/Y related.\r\n\r\nMany people on the forums are also seeing the same thing, here's some of the images. Looking at it straight on, the prints look fine and Z height seems to be fine. When you shine light down from above, the fatter lines cast shadows and it looks pretty rough.\r\n\r\n**EDIT: Please read before posting!**\r\n\r\nWe appreciate all the help everyone is adding to this post; however, many people are making suggestions without reading the megathread that is this issue. Here's what we _think_ we have squared away thus far. I will continue updating this as I read through the megathread again:\r\n\r\n**First and foremost, Prusa is seeing this on their in-house printers as well and have yet to find a fix. This isn't a simple \"tighten your belt\" issue.**\r\n\r\nEverything else already tested, **read here**: https://github.com/ff8jake/Prusa-Firmware/wiki/MK3-Issue-%23602---Inconsistent-Extrusion\r\n\r\n![extrusion](https://user-images.githubusercontent.com/8582658/38383023-ffe31bb8-38d0-11e8-88f9-78798cd8b2e6.jpg)\r\n![439ac03b-cdb8-4bb9-ab2d-93fc22ee58ff](https://user-images.githubusercontent.com/8582658/38383027-02e4859a-38d1-11e8-8d35-ae98282a631e.jpeg)\r\n![7c0698a6-a967-4ff5-826e-c872171844f5](https://user-images.githubusercontent.com/8582658/38383031-04aab840-38d1-11e8-9fd0-ce7b2f4b7339.jpeg)\r\n![img_20180315_220019](https://user-images.githubusercontent.com/8582658/38383035-07ca1e58-38d1-11e8-86e4-aa365c50e951.jpg)\r\n![img_20180315_191206](https://user-images.githubusercontent.com/8582658/38383039-0954c5a2-38d1-11e8-94e0-37b6be14afba.jpg)\r\n![20mm_perimeter](https://user-images.githubusercontent.com/8582658/38383041-0b092096-38d1-11e8-9a2a-51d1eb66502d.jpg)\r\n"},"comment":{"url":"https://api.github.com/repos/prusa3d/Prusa-Firmware/issues/comments/391494695","html_url":"https://github.com/prusa3d/Prusa-Firmware/issues/602#issuecomment-391494695","issue_url":"https://api.github.com/repos/prusa3d/Prusa-Firmware/issues/602","id":391494695,"user":{"login":"ryanneufeld","id":585350,"avatar_url":"https://avatars1.githubusercontent.com/u/585350?v=4","gravatar_id":"","url":"https://api.github.com/users/ryanneufeld","html_url":"https://github.com/ryanneufeld","followers_url":"https://api.github.com/users/ryanneufeld/followers","following_url":"https://api.github.com/users/ryanneufeld/following{/other_user}","gists_url":"https://api.github.com/users/ryanneufeld/gists{/gist_id}","starred_url":"https://api.github.com/users/ryanneufeld/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ryanneufeld/subscriptions","organizations_url":"https://api.github.com/users/ryanneufeld/orgs","repos_url":"https://api.github.com/users/ryanneufeld/repos","events_url":"https://api.github.com/users/ryanneufeld/events{/privacy}","received_events_url":"https://api.github.com/users/ryanneufeld/received_events","type":"User","site_admin":false},"created_at":"2018-05-23T21:00:31Z","updated_at":"2018-05-23T21:00:31Z","author_association":"NONE","body":"Was meant for him\n\nOn May 23, 2018 13:59, \"Jake Skipper\" <notifications@github.com> wrote:\n\n@ryanneufeld <https://github.com/ryanneufeld> that's @ericclinedinst\n<https://github.com/ericclinedinst>, unless I missed something lol.\n\n—\nYou are receiving this because you were mentioned.\nReply to this email directly, view it on GitHub\n<https://github.com/prusa3d/Prusa-Firmware/issues/602#issuecomment-391494486>,\nor mute the thread\n<https://github.com/notifications/unsubscribe-auth/AAjuhsKccLOkDC8rcbluF1RhbGqOOc6sks5t1c3PgaJpZM4TI5uR>\n.\n"}}
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