Thread: Push Drill Fluted Bits

I have two of those drills, I believe that they belonged to my grandfather. So I'll guess 70+ yrs old. As I've kept the original bits, I pound out and file what I need from coat-hanger wire. Kind of use it and toss it.
1. I don't believe that you have to fool with the flutes.
2. You need to figure out what the bevel angle needs to be for a cutting edge.
3. I'll make a wild guess and say 30 degrees (like a woodworking chisel).
= = =
If you touched it up, very, very gently, to 30 and try it and tell us all.
If I had to make a second guess, 25 degrees like a good cabinet maker's skew.

They look very similar to what is used in a Stanley "Yankee" screwdriver (the precursor to the modern cordless drill!).

You should be able to touch them up on a grinder basically the same as you would hand sharpen a normal twist drill.

Alternatively, if they are the same as the Yankee bits then new ones are available.