Clearance between moving parts I am using a Prusa printer to print parts for prototyping. The project I am currently working on needs parts to be able to slide against each other and they need to be printed together. A bit like these gears, where the whole construction needs to be printed in one go and the gears need to be free to move afterwards. What clearance should one use between such moving/sliding parts to make it snug but not unmovable?

Each printer will have different "print in place" tolerances, but you can find such a model with which to determine the numbers you seek.

One such item is on Thingiverse:

![tolerance test model](