I'm making a small rotary tool that can fit in a pocket. This is what I have so far. I just need a battery, charging method, and I'll 3D print the enclosure.

electronics – RasterWeb!

Build a Configurable Clock/Timer

Everyday practical electronics 2014 09 by Yurgen - Issuu

Mini Cordless Rotary Tool Kit 3.6V with 50 Accessories, USB

Are you a professional joinery or artisan? This cordless mini rotary tool is the great choice for your work and daily usage. The compact and lightweight design fits nicely and comfortably in the hand and does the specific job, and also perfect for making cute little gifts for family and friends. It comes with 40 premium swapping heads that applied for grinding, cutting sanding, carving, polishing, drilling and more.

Cordless Rotary Tool Kit Lithium-Ion Battery Powered 3 Speed W /40 Accessories, Black

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