Hi
That's usually thin material, 2mm or so - maybe
the thicker stuff is
somehow more prone to breaking in this way?
I've used it up to about an inch or so thick* with no problem, you've
just got to be careful. Tapping holes in it is a bit laborious as you
have to keep backing the tap out to clear the swarf otherwise the tap
tends to jam up. Slowly and carefully is the method when working with
this stuff!
* _Slowly_ with a proper machine shop band-saw and pillar drill...
--
Cheers,
Stan Barr stanb(a)dial.pipex.com
The future was never like this!