{"action":"created","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/2159","repository_url":"https://api.github.com/repos/MarlinFirmware/Marlin","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/2159/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/2159/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/2159/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/2159","id":80559587,"number":2159,"title":"Delta : Per tower rod trim","user":{"login":"BuzzBumbleBee","id":484334,"avatar_url":"https://avatars.githubusercontent.com/u/484334?v=3","gravatar_id":"","url":"https://api.github.com/users/BuzzBumbleBee","html_url":"https://github.com/BuzzBumbleBee","followers_url":"https://api.github.com/users/BuzzBumbleBee/followers","following_url":"https://api.github.com/users/BuzzBumbleBee/following{/other_user}","gists_url":"https://api.github.com/users/BuzzBumbleBee/gists{/gist_id}","starred_url":"https://api.github.com/users/BuzzBumbleBee/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/BuzzBumbleBee/subscriptions","organizations_url":"https://api.github.com/users/BuzzBumbleBee/orgs","repos_url":"https://api.github.com/users/BuzzBumbleBee/repos","events_url":"https://api.github.com/users/BuzzBumbleBee/events{/privacy}","received_events_url":"https://api.github.com/users/BuzzBumbleBee/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/Feature%20Request","name":"Feature Request","color":"006b75"},{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/Needs:%20Work","name":"Needs: Work","color":"fbca04"}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":61,"created_at":"2015-05-25T14:47:20Z","updated_at":"2016-07-31T21:14:09Z","closed_at":null,"body":"Hello all,\r\n\r\nI have implemented some trim process for each tower in regards to diagonal rod lengths locally, and i have a few questions.\r\n\r\nA) Was i blind and there is already a function for this in the development branch ?\r\n\r\nB) Would a feature like this be wanted in the main firmware ?\r\n\r\nC) If so would a M command be needed for this or would configuration based be ok ?\r\n\r\nThe reason I decided to try and trim my diagonal rod lengths in FW was even tho I created the rods on a JIG there was still slight oval to the prints (between 0.4 and 0.8mm error over 50mm on all towers). With the trim process I have added i am now less than 0.2mm error on all towers (the rest i can put down to how the filament settles)\r\n\r\nCheers\r\n"},"comment":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/comments/236457036","html_url":"https://github.com/MarlinFirmware/Marlin/issues/2159#issuecomment-236457036","issue_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/2159","id":236457036,"user":{"login":"Roxy-3D","id":8404322,"avatar_url":"https://avatars.githubusercontent.com/u/8404322?v=3","gravatar_id":"","url":"https://api.github.com/users/Roxy-3D","html_url":"https://github.com/Roxy-3D","followers_url":"https://api.github.com/users/Roxy-3D/followers","following_url":"https://api.github.com/users/Roxy-3D/following{/other_user}","gists_url":"https://api.github.com/users/Roxy-3D/gists{/gist_id}","starred_url":"https://api.github.com/users/Roxy-3D/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Roxy-3D/subscriptions","organizations_url":"https://api.github.com/users/Roxy-3D/orgs","repos_url":"https://api.github.com/users/Roxy-3D/repos","events_url":"https://api.github.com/users/Roxy-3D/events{/privacy}","received_events_url":"https://api.github.com/users/Roxy-3D/received_events","type":"User","site_admin":false},"created_at":"2016-07-31T21:14:09Z","updated_at":"2016-07-31T21:14:09Z","body":"> For example i print a 120mm circle, the diameter is perfect measured in the X / Y / Z, then i print a square and i've strange result in all the side, like a distorted trapezoid. i speak of differences of less than 1 mm.  Most of users don't look at these things because they haven't produced object in perfect size.\r\n\r\nIn the devel-UBL branch there is a Delta Physical Bed Calibration tool. (G25)  I'm not sure if it still works on Delta's because it was written and debugged before all of the probe changes.   I'll get it checked out and going again as soon as I get my Delta back together.    In that branch, the M665 has been extended to allow Delta Radius Trim for each tower.    IMHO it is necessary to be able to trim both radius and rod numbers on each tower.   \r\n\r\n"}}
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