Orbital Shaker For Stir Plate

thingiverse

I needed an orbital shaker for the lab, but didn't want to spend $$$$. I remembered a platform you could buy to put on a magnetic stir plate that would transform the circular motion to orbital motion. That was still $$$ (not as bad), so I designed this. The wholes in the magnet gear is designed to use four (4) 6mm x 3mm round neodynium magnets: https://www.amazon.com/dp/B07NV52KW3/ref=cm_sw_em_r_mt_dp_U_xE2mEb81M0T83 The polarities should be swapped so two on one side are North facing up, and two on the other side are North facing down. Secure with epoxy or cyanoacrylate glue. This three prints of the Orbit Support Spinner and one of the rest This uses no bearings and relies on the small contact area at the tip of the support posts. I've run mine for several hours with no problem. I recommend using simple candle was to lubricate the interfaces.