The testpen
thingiverse
To save money, print this template for a temporary test pin. Use a paperclip as the metallic tip and solder on a cable through the slit on the pin side. Secure the paperclip in place by adding glue or burning it with heat. Remember to print the raft to ensure the test pin stands steadily.
Download Model from thingiverse
With this file you will be able to print The testpen 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 The testpen.