Tapping guides
thingiverse
Update 27/7/16: Added guide for M6 tap A set of guides for hand tapping threads, they fit M2 to M5 taps. It's much easier to do the job using one of these, not only do they make perfectly straight threads, it takes a lot less effort too.
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With this file you will be able to print Tapping guides 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 Tapping guides.