I’m building two MPCNCs - one to use as a wood router, and one to attempt to use as a ceramic 3D printer.
I’ve got one build mostly done - once I have my stepper motor situation sorted out I will start hooking up the electronics and calibrating it using a pen mounted in place of the router.
I’ve started printing the second MPCNC. I originally ordered only enough of the recommended bearings (which are ABEC 5) for one MPCNC. I’ve ordered more, but it will take them another 3-4 weeks before they get here from China, and I’m feeling impatient. I found a bunch of ABEC 3 bearings that have been sitting in one of my junk drawers for a long time (possibly since the late 1990s!) As far as I can tell, they look and spin the same as the recommended ABEC 5 bearings.
So… ABEC 3 vs 5 (vs 7 vs 9) - does it matter? Will the lower precision and efficiency of the 3s vs the 5s be noticeable once I start routing or 3d printing? (I figure, probably not, but the perfectionist in me says that it doesn’t hurt to ask.)