[genewitch]

I have one 3d printer that ca. Do dimensionally accurate parts as long as they're smaller than ~50mm all dimensions.

With the most fine settings the slicer will do, it's within 20 microns in all dimensions, and usually it's so accurate my calipers show no error at all, which puts the error either under 5 microns or 1 micron, I forget.

The biggest issue with PLA is it shrinks a bit, so a perfect print is usually about 102%ish of the drawing size; the slicer manages all of that, though.