DIY: brake caliper dust boot seating tool

I thought of this the other night, around midnight, after having lost my battle with rebuilding M3 calipers that I was swapping into my 135 (along with all suspension bits and entire rear subframe. It's going to be a 1M wannabe).

I used my son's 3-D printer to make this sleeve for pressing in the dust boots.

thats pretty cool!

I have the rear calipers awaiting rebuild but now I know what I need to have ready ahead of time. Just need measurements for the rear.

I already made changes to the front piece: made round, smooth internal surfaces and shortened the height by about 30%. The original piece took about 2.5 hours to print so downsizing will help the print time quite a bit.

Sorry to revive such an old thread, but I don't suppose you still have the model for the tool you designed there drwillb? Would you mind sharing it if you do? I'd be very appreciative! I've done this without a tool once before and it was awful. I've got a caliper rebuild coming up, and I don't fancy doing it again without any aids!