/diy/ - Do It Yourself

>>2645685
>they need around 0,1 to 0,2 mm of tolerance
Tolerance is not the same as precision, which is not the same as accuracy. Vibration affects the precision of extruded parts, but this variance is usually a small part of overall dimensional accuracy (high speed printing excepted). The bigger factor is that the extruded line of plastic is not an ideal rectangle in cross section that perfectly fills the path assigned to it. It bulges a bit at the sides, with the top and bottom being narrow, which produces the result of the printed part being a little wider than specified. The .1-.2mm part fitment tolerance is mostly to accommodate this, and it's possible to very precisely control this tolerance to achieve different clearance fits..