I cut a vaughncraft shell with reinforcement rings same as a shell without. Roundover on the outside, 45 on the inside. The only thing I was concerned about was the bearing on the bit was riding on the re-ring. It worked out really well for me.

It should not be any different than before.

It's just more material.

Make sure your bit has a big enough profile to get the angle you want.

Measure twice cut once. LoLoLoLo

When cutting edges on old drums like Premiers with rings, you have to note that the rings are not the same thickness all the way around.

This again means you will have to cut the edges only so far - and the last bit of adjusting must be done by hand.

I do this with sanding papers rolled around a block that has a suitable rounding, so it fits with the curvature of the edge, and making certain that I hold the block at the correct angle.

By judging the top, flat area of the bearing edge, I can sand the areas where it is widest until it is equally wide all around. I then procede until the flat area is between ½ and 1 mm - depending on how dull I want the drum to be. The larger the drum, the wider I like the flat area.

[img]http://www.gratisimage.dk/thumb-005B_4F296D57.jpg[/img]

[img]http://www.gratisimage.dk/thumb-0657_4F296D57.jpg[/img]

Oh - and the outsides are not necessarily round either, especially not if it is a shell made with a scarf joint like Premier, 3-ply Ludwigs and such.....

Regards

Jon