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umdpru
Richard,
I found the issue with my 3DR simple, I believe. I gave up on it for a while and built a MK from ultibots that prints fantastically. During that build, I decided to print a "torture test" model on the Cupcake CNC that I had used to print both of the frames on the 3DR simple. Well, after the torture test model was complete, I examined it and found that the square box was out of square. My X and Y axes aren't square to each other. It's a real punch in the gut to know that this has existed. I think I will build a Z-probe for it and attempt to use Rich Cattel's auto calibration firmware. If that doesn't work then I'll print a new frame on the MK and try one last time! IF that doesn't work then the parts are going into a Tantillus!
for what it's worth, I was able to calibrate the MK in about an hour manually. I haven't fine tuned it like you have yours. I just don't see that I have a need to get that good with it.
Great! Good to hear your insightful problem solving skills are working for you.
Unfortunately, I don't believe the Auto Calibration will help you with the XY axes being out of square. But I've been known to be wrong. The auto calibration is to make sure you have a level/flat printing plane across the whole surface.
Not being square could be a structural issue, or a steps/unit calibration setting in firmware.
not sure whether to upgrade my Printrbot Simple to XL or to build a new Delta/Kossel with parts from 3DR Simple and new parts, like Azteeg X5, 2020 to go bigger and stronger, sliders by Jay Couture.......
Take Care