Paint Mixing Attachment

I designed a paint mixing attachment for a drill, since I didn't have one. You will need to supply a 1/4 inch rod for the "driveshaft". Since I have a bit of a penchant for overengineering things, it is a little more complicated than strictly neccessary. :) Edit, original version, now marked old, wasn't durable enough, so I simplified and robustified the design, and also uploaded a few more blade count options.