Just after a bit of info. re. the design of these, specifically the best method for clamping of BB shell ie is it simply a case of clamping either side of the shell to a square surface, or are machined cones necessary?
Thought about getting one from Joe Bringheli but he has a min 4 week waiting list + the shipping to the uk hikes the price up a bit.
My other option is getting something machined locally, but am unsure as to what's the best method - hence the thread.
Thanks as always.