good model but you need the magnets

The 6x2 rare earth magnets I used, which have worked fine in many other projects, were not strong enough to hold the bits in place. If you turn it over, the bits fall out right away. I attribute this to the thickness of the plastic separating the magnet from the bit and perhaps the metal composition of the impact-rated bits I am using. It's a great idea but it just did not work for me. However, I do like the design very much, so instead I placed the magnets directly at the bottom of the hexagonal opening. I sanded the bottom of the magnets with 320-grit sandpaper and used a premium cyanoacrylate glue with 70% IPA as an activator. This holds the bits in snugly yet it is still easy to remove them. To make this approach work, you need to turn on traditional (not tree) supports to fill in the opening where the magnets should go. I did this as an easy fix instead of remixing the STL model. Also, I found the fuzzy model was a very tight fit in my PS21 driver, so I used the smooth model instead.

Works great, but the bit holes are a little loose. They rattle in the holder. The magnets keep them in, but if I were to shake it with the drill upside down, they would fall out. Note: This print does not work for the Bosch impact driver that comes in a set with the Bosch drill. The impact driver does not have the same screw hole as the drill.

works

works