I am a teacher at a high school in Vermont, USA
We have an UMO that we just installed a heated bed upgrade kit.
All things went well with install and are impressed with the new screw.
We upgraded firmware to the new Marlin and using Cura 2.3.1 we tried to print a bevel gear (previously printed on UMO prior to heat bed upgrade.) (0.1mm z height, 210C, 50mm/s)
Here is link to photo of 3D print.
(original print in yellow PLA, new print in white PLA)
As you can see in the photo there is a problem with z-steps and the new screw.
I can only assume problem is in the the new firmware / g-code set-up. We have NO IDEA how to fix.
can anyone HELP?