Improved storage handle screwdriver for magnetic chuck

thingiverse

I decided to put bit storage in the handle of my storage-handle screwdriver (reference remixed design). In addition to the 3/16" magnet, you will need six 1/8" dia. x 1/16" magnets to retain the bits. I used some high-strength magnets so they retain the bits even when I dislodge the chuck with a tap to my palm. The diameter of this one is wider by a few millimeters; that was required to retain the bits and keep strength. When you have put this together and hear the bits snap into place for the first time, it is a happy sound! Used for a 1/4" chuck that takes 1/4" bits. Next up: a parametric SCAD design. I already have the preliminary. :-) Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator 2X Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: .3mm Infill: 50% to 75% Notes: Use 4 shells or more to give it good strength. I recommend ABS for this application. Post-Printing Ensure your print is loose enough to remove the chuck easily prior to inserting it completely! The handle storage area should be looser than the "business end." To insert the 3/16" magnet, simply center it on the end of the chuck and insert fully into the screwdriver. The friction and pressure will retain the magnet. To insert the small magnets, place them on the end of a small steel rod or long screwdriver bit or chuck; off-center if you're using a 1/4" hex. Note: you may need to glue the small magnets in place; use cyanoacrylate adhesive ("super glue") or a bit of thick ABS slurry. Carry your most-used six (or seven) bits with the screwdriver. When storing the bit in their handle slots, turn them so the hex face with the marking faces outward; you will be able to quickly tell a Ph1 from Ph2, etc. You might want to take emory cloth/sandpaper to the edges, as I find they print a bit sharp. My old design wore smooth, so this is strictly optional, if you want it to be comfortable to use on day 1. How I Designed This I used Autodesk 123D Design to make this.