If you've ever made a custom Arduino shield using standard perfboard, you know the two digital IO headers are separated by a non-standard distance and won't line up.
Rssalnero on Thingiverse tried using needle nose pliers to bend the pins to match and failed miserably.
So he created two simple 3D printed jigs that let you bend an 8-pin header. The first jig bends the correct offset and the second helps you straighten out the ends again. You can see the result in the picture above.t's a pair of jigs for bending an 8 pin header the precise amount needed to mate any perfboard with your Arduino.
Via "Make Your Own Arduino Header Pins" on hackaday.com.