[Dominik]

Thanks everybody!

One more:

It is tempting to use imperial 1/2" (FORD, Jag, GM) threaded nuts on Metric M12 (BMW, Merc).
They seem to fit, but won't last... Pitch is almost identical, stud diameter is not!
The metric nuts won't fit over the imperial studs.

Let's get orders for David that the CNC can run for a few hours after is has been set up.
A new thread may be wise.

Dom