MiniMag Bit Driver

prusaprinters

<h4>Background</h4><p>I needed a ¼" driver for idle screw adjustment on my car that was low-profile, magnetic, &amp; fixed to allow precise rotation control. I printed several versions of designs I liked, but the hex bit fit was too loose &amp; shallow for my need, plus scaling for better hex fit affected magnet press fit. So, I designed my own version.</p><h4>Design</h4><ul><li>Optimized shape for tight areas, knurled pattern for finger grip, &amp; min print time&nbsp;</li><li>Deep hex pocket provides full engagement on my particular quick-connect ¼" shank nut driver bits (old Black &amp; Decker)&nbsp;</li><li>Requires qty 2 - 6x3mm magnets</li></ul><p><i>Notes:&nbsp;</i></p><p><i>Hex pocket depth won't work well for typical short bits since it will swallow them up</i></p><p><i>YMMV on hex &amp; magnet clearance due to printer settings, material, hex/magnet dims, etc.. A test slice print of slip fit area may be a good idea.</i></p><h4>Printing &amp; Assembly</h4><p>Printed in Overture Black PETG @ 0.3mm layer, 15% Gyroid fill, &amp; 4 perimeters. No support, no pause required. Magnets can be pressed into pocket using hex bit.</p><h4>Reference</h4><p>Here are some great drivers I either printed or considered printing before creating my own design.</p><p><a href="https://www.thingiverse.com/thing:1739820">https://www.thingiverse.com/thing:1739820</a></p><p><a href="https://www.thingiverse.com/thing:4928471">https://www.thingiverse.com/thing:4928471</a></p><p><a href="https://www.prusaprinters.org/prints/108718-screwdriver-handle-for-hex-bit">https://www.prusaprinters.org/prints/108718-screwdriver-handle-for-hex-bit</a></p><p><a href="https://www.prusaprinters.org/prints/94252-bit-holder-with-magnet">https://www.prusaprinters.org/prints/94252-bit-holder-with-magnet</a></p>