Drilling in hardened stainless steel

Have you thought about just grinding slots with an abrasive disk? That's what I usually do to make a cheap DRO for a machine. Much easier than drilling.
Randy
 
Get the smallest masonry bit you can find and drill away.
 
another way to put small holes in hardened materials is to lap the hole. use a small piece of brass (welding brazing rod) and a bit of clay to surround the hole and contain the lapping compound. medium speed and just touch down raise the brass lap and continue until you have a hole bill
 
I just did this. Carbide was required.
Robert
 
Have you thought about just grinding slots with an abrasive disk? That's what I usually do to make a cheap DRO for a machine. Much easier than drilling.
Randy
Randy, great idea. That's what I'll do.

Glen
 
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