There are "printed circuit board drills" that I believe are carbide.
Amazon has inexpensive ones.? Professional industrial ones cost more.? The are all quite brittle and easy to break.? They are usually used in CNC machines with multiple heads doing multiple boards at one time.
Charles E. "Chuck" Kinzer
On Saturday, March 22, 2025 at 11:27:37 AM PDT, Jacques Savard via groups.io <jacquessavard@...> wrote:
399?/?5?000
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I have some cpu 486 or pentium vintage version
?
But impossible to drill a ho;e in the material
Normal drill for Metll Nothing Drill Diamand for glass or stained glass Nothing
barely trace
Probably epoxy tre
Do you have an idea please Jack 47 71 it is exposy proly but very hard stouf Any Advise Please
