Pocket Magnetic Bit Driver

About

This pocket bit drive (or holder) can be used with HEX ¼" (6,35 mm) bits directly or with adaptators like HEX ¼ to SQUARE ¼", etc.

This model was designed so the bits stays firmly in place but can still be removed without using a tool. Be carefull about the material shrinking if you print it with other material than PLA/PLA+/PLA-HD.

There is also a hole at the back (top) of the tool where you can, optionnally, place a circular magnet that will holds the bit in place. The hole has a diameter of 10 mm and a depth of 3 mm so can use 10x3 mm, 10x2 mm or 10x1 mm magnets.

If you plan to use this tool in contact with hot parts, for example if you want to use it to unscrew a 3D printer's nozzle, you might want to print it in a material that is less sensible to heat than PLA. You should try ASA or PETG.

How to print?

To print the different models I used PLA+.

You should switch off cooling completly for the first 8 layers in order to prevent  warping (because the model has a bevel).

I printed it at 60 mm/s on a Kossel delta 3D printer with a 0.4 mm nozzle and a layer size of 0.2 mm. I used rectlinear Infill with a density of 25%. No support required so i didn't add any.

Assembly 

If you printed the magnetic version, you can add a 10 mm diameter magnet at the top of the tool.

Then just use ¼" HEX BITS with the tool. :)

Where to buy materials?

• You can purchase the same magnets I used : 10 mm x 3 mm NEODYME powerfull magnets from Amazon : https://amzn.to/3IApy2x
• Optionnaly, can you also buy an HEX ¼" to Square ¼" adapter from Amazon : https://amzn.to/3Tgx8Ea