A Fancy Drill Bit?

[bandit571]

While putting away toys..found this in a drawer..
[attachment=48983]
Seems to be a way to open it up and sharpen it?
[attachment=48984]
Just have to figure HOW to sharpen it.....
[attachment=48985]
Before I can place it into a Brace drill.....

[fixtureman]

It's a counter sink

[bandit571]

Soooo....just exactly HOW would you go about sharpening this?

[MarkSingleton]

I think I would try to chuck it into a power drill and run in reverse on sandpaper, holding it at the right angle of course.

Easier said than done of course. If you have a spare auger chuck, perhaps an adapter of some kind could be made.

[gjohn]

If you remove the screw can you fit sandpaper glued to a piece of sheet metal between the two halves?

[bandit571]

Yep, and..the 2 halves can rotate side to side, as there is a pivot point up at the tapered end.