Thank you, Jamie. I doubt it can be trusted for “mission critical” work but it seems to perform surprisingly well. The r&p already shows slight signs of wear… but hopefully the residue is just the roughness of the printed surfaces wearing smooth…
And here are a couple of your rulers…
In the first and second photos, the X ruler was initially ~0.75mm long (over 100mm) and the steps/mm value adjusted by 0.9926 to bring it to near “dead on”, when compared to an commercial metal ruler. Both X and XY rulers are now reasonably accurate, exhibit minimal backlash AFAICT, and the spacing appears pretty uniform.
All in all, I’m thrilled with how well it seems to perform.
Thanks again, Jamie.
– David