OMT² - Hex Precision Tests for Bit Holders by AhZou

Last crawled date: 3 years, 1 month ago

Creating tools that are meant to fit standard bit holders requires a very high precision.
To help you figuring out how precise is your printer (or your settings), or which flavour of that OMT² bit you like so much to take ...here are a few tests for you.
This is just a print test. To know more about the project, visit : http://www.thingiverse.com/thing:1381028
Tight (No tolerance)

This test is exactly 1/4" (or 6.35mm).
Depending on your printer's precision, it will probably be too tight to fit any bit holder

Basic (tolerance = 0.1mm)

This test is slightly smaller than 1/4". It's exactly 6.25mm.
It should be the right size to use with the OMT² handles, as well as standard bit holders.

Loose (tolerance = 0.2mm)

This test is smaller than 1/4". It's exactly 6.15mm.
In case the basic version is still too tight, this one is the way to go.

Notes :

Print and try, there is no secrets here ^^
Let it cool down a couple of minutes before trying out, as the plastic will still be soft.

Tips and tricks :

It's easier to fix a bit too loose than too tight. For that, just put a tiny bit of Blu-Tack down the socket (the female part) and you should be good for hundreds of uses before having to change it.