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