Can we please stay with horizontal setups in this thread, in order to avoid confusion?
I have more results that might be of interest. First let me describe two changes I’ve done (yes, simultaneously, bad for systematic analysis, I know …):
PTFE pads on sled
To reduce friction I put some self-adhesive PTFE on the bottom of the sled. We sell this stuff, so it was a no-brainer. I’m not sure how much impact it has, but it surely doesn’t hurt.
Belt tension
Earlier I mentioned that belt tension with my manual frame measurement was noticeably lower than with the automatic calibration, and I wrote:
If Maslow thinks the frame is bigger than it actually is, it releases more belt than necessary. So I scaled the anchor coordinates in my maslow.yaml by a factor of 0.999, but keeping the geometry. This yielded nice, tight belts. I know that my frame measurement isn’t off by that much, but maybe the belts’ pitch is incorrect.
Test results
Using this setup I made a test cut in particle board. One big square, five small squares and five circles. Everything is a bit too big, but there is no overall scaling error. For details check this image:
Pretty close!