- Joined
- Jul 25, 2007
- Messages
- 1,380
Here's a little tool that I use to countersink or bevel larger holes. I imagine someone has done something like this before, but I thought I'd share in case anyone benefits.
The grooves in the steel body are not required. I speculated that I would want o-rings to help prevent slippage, but the hose clamp is keeping everything secure as-is.
The abrasive is just a piece of used 2" belt that I slit with a razor.
The abrasive has a tendency to mushroom above the point of engagement, resulting in a bevel that is wider than the steel body angle. In other words, my steel body is 90° but the resulting bevel is about 110°. So if you want a 90° bevel, then make a body that is 70° or so.
The abrasive wears out quickly but changes out quickly.
The grooves in the steel body are not required. I speculated that I would want o-rings to help prevent slippage, but the hose clamp is keeping everything secure as-is.
The abrasive is just a piece of used 2" belt that I slit with a razor.
The abrasive has a tendency to mushroom above the point of engagement, resulting in a bevel that is wider than the steel body angle. In other words, my steel body is 90° but the resulting bevel is about 110°. So if you want a 90° bevel, then make a body that is 70° or so.
The abrasive wears out quickly but changes out quickly.