https://www.instagram.com/reel/DZ-5r-gv0vb/ https://www.instagram.com/formfollowsphil/p/DadDH05kSE9/

3 different versions. OG with single handle, new one with handles on both sides and two main pin sizes (you can likely only actually use 1 at a time unless you want to deal with interference) and a third with a plus shaped handle and better index pointing. Print solid/near solid/lots of wall shells. May need CAD or sanding adjustment depending on your printer/needs. Graphite makes a good lube. I used standard sized HSS burrs for pins, cut in half. But you should be able to use anything that is harder than what you are trying to bend. 3/32nd and 1/8" or 2.3 and 3mm pins.