- Joined
- Nov 8, 2009
- Messages
- 1,533
It looks to me like you are feeling your way through it pretty well, Jeff. There are a lot of different ways to do plunge cuts, and you might have to try a few before you find one that you are happy with.
The thing I like about the trick I showed you with the granite is that you can leave them pretty rough while you do the bevels and then use the bevel itself as a guide to make sure that your plunge angle matches the bevel and does not over-cut at the spine or the edge. IF you use this method, the first several passes really strip the grit off the paper so you have to use light pressure and you will only get a few effective passes before you have to move the paper to get fresh abrasive at the corner. Once the contour of your plunge starts to match the corner of the granite the paper will not wear out so fast.
If your bevels are very convex you may want to work the main bevels on the granite first to get them flattened out, then dress the plunges. Good-quality 60 grit paper works well for this.
The thing I like about the trick I showed you with the granite is that you can leave them pretty rough while you do the bevels and then use the bevel itself as a guide to make sure that your plunge angle matches the bevel and does not over-cut at the spine or the edge. IF you use this method, the first several passes really strip the grit off the paper so you have to use light pressure and you will only get a few effective passes before you have to move the paper to get fresh abrasive at the corner. Once the contour of your plunge starts to match the corner of the granite the paper will not wear out so fast.
If your bevels are very convex you may want to work the main bevels on the granite first to get them flattened out, then dress the plunges. Good-quality 60 grit paper works well for this.