/diy/ - Do It Yourself

Anonymous Tue Oct 27 23:13:51 2020 No.1939376 [View]
File: 73 KB, 1453x1500, 71vILWFudkL._SL1500_.jpg [View same] [iqdb] [saucenao] [google]

>>1939134
The diamond grit is in fact harder than the steel, but its bond to the hole saw is not good and it will not actually bore like you want it to. It simply wont work

The other anon is right, buy a solid carbide spade drill. Do not buy a twist drill, buy a spade bit. Run it at 1500-2000 RPM dry. It will slowly but surely eat away the material, whether its tool steel or just work hardened steel, doesnt matter. Itll be slow and controlled.
I have a few on hand for when I need to "drill out" broken taps, expensive but the exact right tool.

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/diy/ - Do It Yourself

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