All the mini-bit holders I've tried lose their bits after changing a few times.

I solved that by adding a small recess to house the 8mm x 3mm magnets we all get for the extruder gear visualizer!

Just insert a pause at the first hex-layer to lock the magnet in place. It's designed to allow the magnet to have full contact with the bit for a very secure lock.

The benefit of the magnet is this also doubles as a fridge-magnet so you never loose it!

Prints in under a half-hour!

G-Code attached for PETG print at .2mm layers with a pause to insert the magnet.

If you make this, please post a make!

Or Buy me a Beer!