How accurate are 3D printing machines in general?
I have yet to source my 3D printer, but I’m building a what is in effect a ‘piston’ (i.e. this consists of a hollow cylinder with another cylinder going up and down inside it.) And I need to know roughly what tolerance to allow. i.e. I need to know how much smaller outside diameter of the inner (i.e. ‘male’) cylinder should be compared to the inside diameter of the outer (i.e. ‘female’) cylinder. The inner diameter will be about 5mm.
I guess I am expecting to need to do a little light sanding to finish off 3D printouts… but hopefully not too much!
Printing will be done in standard plastic (e.g. ABS or Nylon or PLA etc)