Update: -Added longer cap to accommodate longer driver bits -Added V3 base with enlarged holes for easier fitting. -Removed old V2 base -Added new video Designed as a quickie as I will be traveling soon, and was told I had to streamline my toolkit. https://youtu.be/Z4x-yEOk6Ek https://youtu.be/En12kyfZht0 This pays homage to a little screwdriver I had some years ago, but had a few design flaws - such as only taking 4 driver bits. I did some math and found that there are 6 driver bits I use most commonly, so I made room for 6, which is a nice number actually. I suggest you print the base, and V2 cap. the original cap was a bit of a failed design attempt but I left it in for those who like a bigger, smooth grip. It probably has combinations I haven't worked out yet, and source is included if you think you can do it better - or just want to build on the idea.