How much space do you need to leave between 3D printed parts to have them fit together smoothly? I created some printable parts to determine this, and tested it with several different 3D printing services and materials.

The results are described here:

https://saccade.com/blog/2019/12/fit-testing-block/

The parts are up on Thingiverse if you want to try it with your service/printer. I'm interested in hearing of the results.

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