Pot stirrer

This is parametric pot stirrer.
It has a 12V motor attached to the top of the shaft (10RPM from ebay) which rests on the top of the pot. It runs off an adaptor, but could easily run off batteries depending on how much power is required to run it.

To enable quick and easy detachment of the motor from the stirrer it uses a modified version of my Parametric spider coupling inspired by the Turbo Mixer. The spider is not required, as with one-way rotation backlash is not an issue

The default current stirrer is designed for an 11cm flat base pot, but this can be easily adjusted in the SCAD file.

EDIT 16/6/13:
New SCAD uploaded with a few more options for the hub attachment.
My initial version distorted while cooking porridge, and the blades were too close, so tended to clog with a range of things (rice,lentils,etc) so I've spaced them out a bit more.
I'm unsure whether I'll be able to change the profile to stop the heat-distortion, or whether I'll just have to cas