First Layer Callibration is not adhering to the bed. - Assembly and first prints troubleshooting https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/first-layer-callibration-is-not-adhering-to-the-bed/ Prusa3D Forum Discussion Board en-US Tue, 09 Jun 2026 05:47:59 +0000 wpForo 60 RE: https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/first-layer-callibration-is-not-adhering-to-the-bed/#post-784487 Thu, 05 Mar 2026 13:35:23 +0000 I've had my Mk3S for 6 years, the pinda probe would move over time until I finally used purple thread locker. Had to reestablish my z offest too many times. Thier zip tie method to get the generic placement, but you need then run live z tests to dial it back in in. I used a different file to get the live Z, never found the built in very good. See below.

https://forum.prusa3d.com/forum/prints-troubleshooting/failed-first-print-fix-for-petg-benchy-that-shifted-after-a-couple-layers-on-textured-sheet/paged/2/#post-777727

]]> Assembly and first prints troubleshooting Ruebarb https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/first-layer-callibration-is-not-adhering-to-the-bed/#post-784487 First Layer Callibration is not adhering to the bed. https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/first-layer-callibration-is-not-adhering-to-the-bed/#post-784415 Wed, 04 Mar 2026 21:12:37 +0000 I've been printing with my mk3 and MMU 3 for a long time with no problems. Recently I put in a new filament and ran a first layer calibration to test it, but the PLA wouldn't sit nicely on the bed. I took out the filament and ran the calibration again with a known good filament, but this time it also gave me poor results, pictures below. I've since cleaned the print bed, used a glue stick to help adhesion, I've done a cold pull to clean out the nozzel. I'm looking for any suggestions, or anything I've forgotten about. One theroy is to try a better glue stick (name brand vs dollar store), but I'm unsure if that is my only issue.

TIA

 

]]> Assembly and first prints troubleshooting lutgendorff.film https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/first-layer-callibration-is-not-adhering-to-the-bed/#post-784415