Brad point drill bits are very much easier to sharpen than twist bits.
When you buy some, take one of the larger ones, and with your grinder
switched OFF, hold a bit onto the grinding wheel so that the wheel
fits snugly into the angle between the spur and the point. You'll need
to use the right hand side of the wheel, and the bit will point
somewhere over your right shoulder. You will be able to feel when the
bit settles into the correct position. Practice and let your body and
arms learn the position. When you feel you're ready to go, you wont
need to rotate the bit; once you've settled at the correct angle you
just push the bit onto the rotating wheel.
I don't buy brad bits anymore, I regrind twist bits so that I'm not
fixed to the sizes obtainable in stores.
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