Gemini Brake Disk and BMW Caliper (Widened)

The cobbled up pipe notcher on the lathe to maintain consistency of the angles and the jig to mill the "O" rings for the calliper. The jig has a 7mm nipple machined to drop the widening plate onto so the "O" rings align with the calliper. (8 "O" rings in total ). The depth must also be correct to match the recessed "O" ring section in the calliper which is different on each side of the calliper. There needs to be 20% crush on the "O" ring so one side is .8mm and the other 1.2mm to match the BMW part. I used a 7/16" end mill.  Again all this can be purchased from TPC, but as I have no money and a shed full of machines and I'm surrounded by clever friends in the trade I can move forward.