Shopsmith Power Couplings
thingiverse
These power couplings are connected by a sturdy square hardwood insert. The length can be tailored to fit specific needs, and I opted for a 5-inch red-oak piece that works seamlessly in my setup. If it were ever to fail, the hardwood is easy to swap out, but so far, this coupling system has proven remarkably reliable during countless hours of operation on my jointer.
Download Model from thingiverse
With this file you will be able to print Shopsmith Power Couplings 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 Shopsmith Power Couplings.