"Dave Osborne" wrote in message
...
Dave wrote:
On 10/10/2010 11:40, Will wrote:
Anyone know why you can't buy diamond drills - I have a diamond saw but
the
hardest drill I have is HSS Cobolt?

There are 3 drills harder than that, but you will have a hell a lot of
trouble tracking them down. Even Dormer do do not list them.

C1150 come next with
D200 following
Solid tungsten carbide was used for drilling carbon fibre.

Dave


Good point. You can buy solid carbide drills for drilling printed circuit
boards.

http://www.megauk.com/carbide_drill_bits.php

which always sounds odd because pcbs don't seem that hard - but I suppose
they are full of glass these days...

S