{"action":"opened","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/10130","repository_url":"https://api.github.com/repos/MarlinFirmware/Marlin","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/10130/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/10130/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/10130/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/10130","id":306128799,"number":10130,"title":"Z height errors on tool change (with ABL Bilinear)","user":{"login":"thinkyhead","id":698003,"avatar_url":"https://avatars2.githubusercontent.com/u/698003?v=4","gravatar_id":"","url":"https://api.github.com/users/thinkyhead","html_url":"https://github.com/thinkyhead","followers_url":"https://api.github.com/users/thinkyhead/followers","following_url":"https://api.github.com/users/thinkyhead/following{/other_user}","gists_url":"https://api.github.com/users/thinkyhead/gists{/gist_id}","starred_url":"https://api.github.com/users/thinkyhead/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/thinkyhead/subscriptions","organizations_url":"https://api.github.com/users/thinkyhead/orgs","repos_url":"https://api.github.com/users/thinkyhead/repos","events_url":"https://api.github.com/users/thinkyhead/events{/privacy}","received_events_url":"https://api.github.com/users/thinkyhead/received_events","type":"User","site_admin":false},"labels":[{"id":91739409,"url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/Bug:%20Potential%20?","name":"Bug: Potential ?","color":"f9d0c4","default":false},{"id":170818118,"url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/Needs:%20Feedback","name":"Needs: Feedback","color":"fbca04","default":false}],"state":"open","locked":false,"assignee":{"login":"thinkyhead","id":698003,"avatar_url":"https://avatars2.githubusercontent.com/u/698003?v=4","gravatar_id":"","url":"https://api.github.com/users/thinkyhead","html_url":"https://github.com/thinkyhead","followers_url":"https://api.github.com/users/thinkyhead/followers","following_url":"https://api.github.com/users/thinkyhead/following{/other_user}","gists_url":"https://api.github.com/users/thinkyhead/gists{/gist_id}","starred_url":"https://api.github.com/users/thinkyhead/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/thinkyhead/subscriptions","organizations_url":"https://api.github.com/users/thinkyhead/orgs","repos_url":"https://api.github.com/users/thinkyhead/repos","events_url":"https://api.github.com/users/thinkyhead/events{/privacy}","received_events_url":"https://api.github.com/users/thinkyhead/received_events","type":"User","site_admin":false},"assignees":[{"login":"thinkyhead","id":698003,"avatar_url":"https://avatars2.githubusercontent.com/u/698003?v=4","gravatar_id":"","url":"https://api.github.com/users/thinkyhead","html_url":"https://github.com/thinkyhead","followers_url":"https://api.github.com/users/thinkyhead/followers","following_url":"https://api.github.com/users/thinkyhead/following{/other_user}","gists_url":"https://api.github.com/users/thinkyhead/gists{/gist_id}","starred_url":"https://api.github.com/users/thinkyhead/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/thinkyhead/subscriptions","organizations_url":"https://api.github.com/users/thinkyhead/orgs","repos_url":"https://api.github.com/users/thinkyhead/repos","events_url":"https://api.github.com/users/thinkyhead/events{/privacy}","received_events_url":"https://api.github.com/users/thinkyhead/received_events","type":"User","site_admin":false}],"milestone":null,"comments":0,"created_at":"2018-03-17T05:04:32Z","updated_at":"2018-03-17T05:04:32Z","closed_at":null,"author_association":"OWNER","body":"From @FNeo31:\r\n\r\nI put Marlin 1.1.8 on my 3D printer ( senhai3D - one acrilic Chinese version of prusa i3)\r\nAnd work well in single extruder. So I make some parts and reassemble all my printer like the attached image, and change the configuration for dual extruder and put my printer running again. I test the first extruder and everything was well, test the second and all was well to, so I tried to test the dual extrusion print to calibrate the relative position of my extruders and I check some situations:\r\n\r\n1: When I print with the two extruders at same time the height of my printed object was wrong 8.20mm instead of 5mm\r\n2: When I tried to change between extruders like :\r\n``` \r\nG0 T0; \r\nG0 T1;\r\nG0 T0; \r\nG0 T1;\r\nG0 T0; \r\nG0 T1;\r\nG0 T0; \r\nG0 T1;\r\nG0 T0; \r\nG0 T1;\r\n```\r\nThe extruders goes down at each change.\r\n\r\nCan you help?\r\n\r\n![img_20180119_002440](https://user-images.githubusercontent.com/37299777/37309734-b7518b18-2639-11e8-94da-dac54f21c788.jpg)\r\n![img_20180112_014912](https://user-images.githubusercontent.com/37299777/37309776-d47812b6-2639-11e8-913e-aee16184b08b.jpg)\r\n![img_20180112_010312](https://user-images.githubusercontent.com/37299777/37309817-fab4875c-2639-11e8-80f1-a692e9ed8202.jpg)\r\n![img_20180312_193136](https://user-images.githubusercontent.com/37299777/37310005-8fa8975e-263a-11e8-80f4-1925287480cf.jpg)\r\n![img_20180312_193049](https://user-images.githubusercontent.com/37299777/37310053-b1ab5aa8-263a-11e8-8e20-faf631f10698.jpg)\r\n![img_20180312_193108](https://user-images.githubusercontent.com/37299777/37310100-ca76f448-263a-11e8-8ec8-32fc46d2a012.jpg)\r\n![img_20180312_193117](https://user-images.githubusercontent.com/37299777/37310110-d8aacc56-263a-11e8-8330-bdf13ffd5a88.jpg)\r\n![701953_1091637194201986_2643843535408775026_o](https://user-images.githubusercontent.com/37299777/37310250-3c2f8cda-263b-11e8-9a46-98b06615424e.jpg)\r\n"}}
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