Vertical Post and Hole Tolerance Tests

I've always kind of guessed at how to size a circular hole/socket for a circular post.
Many times it works, often it requires a model change and reprint to get it right.

I thought I would create some test objects to get a little more knowledgeable on the matter.

These are sets of holes and posts to test how your slicer and printer combine to create objects that slide or even snap together.

The test pairs are for 2, 4, 8, and 16 mm holes and posts.
The middle post or hole is at the exact dimension and the ones above are bigger and the ones below are smaller.
The diameter change up or down for each step is noted in the print.

I found that the 4mm posts were really weak and broke relatively easily on standard slicer setting of 2 walls # 0.2mm layer height.

I included a 4mm post version which are actually tubes with an inner dimension such that exactly 4 wall layers are printed when using 2 walls slicer settings. they are MUCH stronger. (this assumes a 0.4mm nozzle)

Yo