05/06/18: added fusion360 files
This is a copy of the Watchband Spring Bar Remover Tools you can find on eBay.
After printing you need two m6 and one m5 screw with a washer. Just thread the printed holes and insert the screws like in the picture.
The outer diameter of the spring is approximately 7mm and the inner 6mm.
For the inserts I used two "Watch Band Strap Spring Bar Link Pin Remover Repair Tool" from eBay for about a dollar each. Just saw them in half an press them into the slots. I warmed the PLA a bit to get them in there snuggly.