{"action":"created","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1682","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1682/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1682/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1682/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/1682","id":63935981,"number":1682,"title":"Dev version and bed levelling - wrong Z after G29 (several mm above bed)","user":{"login":"harerama","id":1155357,"avatar_url":"https://avatars.githubusercontent.com/u/1155357?v=3","gravatar_id":"","url":"https://api.github.com/users/harerama","html_url":"https://github.com/harerama","followers_url":"https://api.github.com/users/harerama/followers","following_url":"https://api.github.com/users/harerama/following{/other_user}","gists_url":"https://api.github.com/users/harerama/gists{/gist_id}","starred_url":"https://api.github.com/users/harerama/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/harerama/subscriptions","organizations_url":"https://api.github.com/users/harerama/orgs","repos_url":"https://api.github.com/users/harerama/repos","events_url":"https://api.github.com/users/harerama/events{/privacy}","received_events_url":"https://api.github.com/users/harerama/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":48,"created_at":"2015-03-24T08:33:20Z","updated_at":"2015-03-28T03:22:02Z","closed_at":null,"body":"I just upgraded to the latest dev version. I noticed one change that broke my init G-code.\r\nI had the following: \r\n  G28\r\n  G1 Z10.0 F{travel_speed} ;move the platform down 10mm\r\n  G29\r\nNow, with the new version, the G1 move is NOT substracted from the final Z height, which results a wrong first layer Z (in this case, my printer started at Z=10+layer height which messed up the print).\r\n\r\nThe same init sequence was working perfectly previously.\r\nI just need to remove the G1 line to fix the problem, and I am fine with it, but you may want to lay the stress on this functional change.\r\n\r\nAs far as I remember I copied a starting sequence from some webpage, so there may be many users in the same situation.\r\n\r\nRegards"},"comment":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/comments/87153704","html_url":"https://github.com/MarlinFirmware/Marlin/issues/1682#issuecomment-87153704","issue_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1682","id":87153704,"user":{"login":"Sniffle","id":227454,"avatar_url":"https://avatars.githubusercontent.com/u/227454?v=3","gravatar_id":"","url":"https://api.github.com/users/Sniffle","html_url":"https://github.com/Sniffle","followers_url":"https://api.github.com/users/Sniffle/followers","following_url":"https://api.github.com/users/Sniffle/following{/other_user}","gists_url":"https://api.github.com/users/Sniffle/gists{/gist_id}","starred_url":"https://api.github.com/users/Sniffle/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Sniffle/subscriptions","organizations_url":"https://api.github.com/users/Sniffle/orgs","repos_url":"https://api.github.com/users/Sniffle/repos","events_url":"https://api.github.com/users/Sniffle/events{/privacy}","received_events_url":"https://api.github.com/users/Sniffle/received_events","type":"User","site_admin":false},"created_at":"2015-03-28T03:22:02Z","updated_at":"2015-03-28T03:22:02Z","body":"So, I know from previous versions of marlin my Z-probe offset was -4.3mm, \r\n\r\nI flashed just a few min ago after #1700 had been merged, I left my offset of -4.3 for my Z offset, I ended up changing it using M851 to -8.05 to allow a .038 feeler gauge to have a moderate drag when placed under the hotend nozzel.  \r\n\r\nmy procedure for checking the offset to make sure it is correct is to G28, G29 E, G1 X150 Y150 Z0 F3000\r\n\r\nAt the end of which i check with the feeler gauge to see if the hotends were placed properly."}}