Stirplate PWM Controlled
thingiverse
The stir plate for homebrew yeast starters uses a 12V fan, but it couldn't go slow enough even with a PWM controller. To fix this, I made one that works with a typical motor. You can modify the DXF file to suit your motor size (mine was 1.4" in diameter and 3 inches long). The design also includes a mount for a PWM controller (http://www.amazon.com/gp/product/B009HKFAIQ/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1) and uses magnets from Amazon (http://www.amazon.com/gp/product/B001ANVAHI/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1).
With this file you will be able to print Stirplate PWM Controlled with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Stirplate PWM Controlled.