15mm to 12mm magnet adapter
thingiverse
12mm Magnet adapter to use in infill3d extruder designhttp://www.thingiverse.com/thing:672260 How I Designed This
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With this file you will be able to print 15mm to 12mm magnet adapter 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 15mm to 12mm magnet adapter.