- Joined
- Jul 30, 2011
- Messages
- 12
I made this tool a while back for cutting holes on our mill. These annular cutters are really amazing hole makers and until now we had to use it with a magnetic base drill. This limited us to cutting only steel that the magnet would stick to. Now we can use these cutters for virtually any material.
Normally on mag drills there is a pin that goes in the center of the cutter, this pin is placed in a center punch hole and guides the cutter.
I found that by creating a holder similar to an endmill holder, its possible to cut very effectively on the mill with no pin.
I turned and bored this from 303 stainless, I probably should have chosen a more suitable material and had it heat treated, but this is working well. The shank is 3/4" and it fits perfectly in a 3/4" endmill holder.
Not shown in these pictures is a flat spot that was milled on the shank where the set screw in the endmill holder grips it. At first I was just going to use a collet, but the holder is faster. I have a dedicated 3/4 endmill holder just for this.
Enjoy
Normally on mag drills there is a pin that goes in the center of the cutter, this pin is placed in a center punch hole and guides the cutter.
I found that by creating a holder similar to an endmill holder, its possible to cut very effectively on the mill with no pin.
I turned and bored this from 303 stainless, I probably should have chosen a more suitable material and had it heat treated, but this is working well. The shank is 3/4" and it fits perfectly in a 3/4" endmill holder.
Not shown in these pictures is a flat spot that was milled on the shank where the set screw in the endmill holder grips it. At first I was just going to use a collet, but the holder is faster. I have a dedicated 3/4 endmill holder just for this.
Enjoy