Tap guide
grabcad
I made this tool in a machining class. You put it in the mill, lathe or drill press and it will keep your tap handle straight and apply enough pressure to cut the threads.
Download Model from grabcad
With this file you will be able to print Tap guide 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 Tap guide.