I am working on a assembly guide, but when printing a part on the new printer I found a simple calibration issue. The part came out ever so slightly oval. That set me on a path that took up quite a lot of my time… Too much, but what is what happens when you are on leave, and you have the time to play a bit…
Anyway, the idea is as follows.
- Print out SCARA-Cal, a special phantom I made for Morgan that initially helped me tweak steps per angle.
- Measure the following lengths marked on the phantom, Theta, Psi, X, Y and enter into a spreadsheet
- Said spreadsheet calculates Theta and Psi steps per degree, and the X and Y scaling required to make perfectly round circles.
My calculations are still a little flawed, but I am trying out a print right now… If it works right this will be the easiest way to ensure a perfect first calibration. If it does, I will re-add SCARA-cal and a quick guide with the spreadsheet to Git