last week I finished re-assembling my 1000x1000 X-Carve and did some test cut today.
I’ll try to explain the better as I can: I have cutted a guitar neck template profile and all seem to be accurate except for the lenght. The template should be long 665,4/5mm but it’s actually 664,4/5mm.
While I have re-assembled the machine I checked the wasteboard squareness (it wasn’t square before) and now seem to be accurate 135.4/5mm in both diagonal.
I also re-done all the wiring, and re-checked the V-Wheels and Eccentric nut. Made the 30 minutes X axis stiffening.
Calibrated the stepper: Now on a 600mm line I have 599,99mm.
But I still can’t figure how those template are always a mm short than they should be. Also cutting a square, seem to be not exact square and not about the correct dimension!
Any thoughts or tips? Could the X axis be not perpendicular to the Y axis? I found that pic “stolen” from @AlanDavis while seems that he had an X to Y axis square problem too (if is my case).
I’m near to have the machine working like I want/need and this is so frustrating!
I talked with Robert many times, I also followed his video for stepper calibration and other things.
As I said above, if I cut a straight 600mm line for example with a 0.5mm bit it turn out exactly 599.99 which is quite perfect I assume. But, if try to cut a complex template, general dimensions look nearly perfect, just 1.2/4mm shorter than it should be.
I also have the square problem, if I try to cut 50x50m square it turn out 49,60x49.70 pretty much. Of course also circle are a little bit oval
Anyway I noticed this morning that my X axis is a bit not square to the Y axis, do you think Alan Davies solution will solve my problem? Without saying that i have to re-check both Y axis V-Wheel that seem a little bit loos on the right side