Video of working stirrer: http://youtu.be/LmRr1_csfh8 This is my DIY Magnetic Stirrer. I have made this stirrer to facilitate dissolution of the HIPS support material with d-limonene. The 3d files are only for support frame and magnet bed. To build this stirrer you will also need the following items: The magnet bed is designed specifically for 2 magnets removed from 40GB Seagate Barracuda 7200 HDD (about $4.5 from trademe.co.nz) but you can easily modify it to accommodate different shapes. Magnets are just pressed into the plastic bed. Bed with magnets is glued to fan using hot glue gun. Top and bottom parts of frame are glued together with superglue. The frame clips onto standard CD case.