I’m the same guy who had to print one of the pieces of the MPCNC split in half, so I first wanted to say that everything came together well enough to get it plotting with a pen.
I haven’t even fully bolted it to the table yet, and chances are there are a few bolts that could use some additional tightening. That said, I wanted to share my results, first to show that the darn thing can run with a split and glued XYZ and partly to ask some questions regarding calibration. For reference, this is set up with a 24"x15"x6" working area and your own most recent pen mount.
In the image, you can see there’s significant wobble to the lines. Again, presumably bolting down all four legs and snugging up a few more bolts will even those out. But in the event I still see issues like that after final installation, what sort of things would cause wobbles like that? Does poorly tensioning the belts produce artifacts like those? Too much tension on the conduit? Too little? Is there a standard checklist of reducing wiggly lines anywhere that I should be working my way through once this is set up?