Quote Originally Posted by evert View Post
That extra material makes it possible to machine it to spec.
You might need to do some fine adjustments on the lathe to eliminate taper when you machine it to size.
Yes you’re right, and it looks like I owe HPC a mental apology, much further down the listing past all the other adverts is a bit about the tolerances and 12mm is +0.2-0.7mm. Looks like I’ve some machining to do

Norm