Drilling in hardened stainless steel

[randyjaco]

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

 

[kd4gij]

Get the smallest masonry bit you can find and drill away.

 

[bfd]

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

 

[rwm]

I just did this. Carbide was required.
Robert

 

[gzoerner]

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