Weiss mill accessories
thingiverse
I mentor a highschool robotics team and we got a weiss mill a couple of years back. I designed and printed a tool holder and cap that are all magnet based. Been using this setup for a couple of years now and they have held up. I printed these originally in abs, but no reason you can't do it in pla or petg. I believe everything is setup for .25" magnet.
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