Really interesting post. I notice this problem a lot with my little Printrbot Jr: The holes are always smaller than they should be. Parts that should fit inside other parts do not. In my case, the error seems to vary from print to print, so I assume it depends on temperature, variations in the filament, phase of the moon, etc… But there does seem to be an underlying bias in this direction; I never get a print with a hole that is too big or a part that fits loosely inside another.
Do you developers agree with his points or if not, what is he missing? Do #Slicers always make #HolesToSmall ?
It sounds quite logical. I would have to use a microscope to be sure though. Also, curling, dye swell and such may affect the shape. Additives in filament may affect the shape too, but that is just a hunch.
I disagree. I find all my holes are a constant smaller than they should be and that that constant = double my jerk backlash. Likely cause is stretching in the belts.
I’m making the switch to PU steel reinforced t5 belts although t2.5 should work as well.