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>Top: dremel 1/8" collet and cheap PCB bit
>Middle: the 2mm collet and bit that came in the kit, there's also a 3mm collet
>Bottom: cheap chinese 3.2mm collet. also works with PCB bits
The Tamiya handy drill is a pretty fun toy to build and use. You can also swap out the plastic ring for a real bearing (5x11x4mm) although that's pointless for this RPM. Safety switch works better if you add two extra washers to tighten it up.