Quote Originally Posted by Old67 View Post
I turn my dremel to almost full speed and the sparks fly off very easily.
Full speed ???? 30000 rpm ???? Way to cook a razor ! I strongly advise against this.

I used a dremel with flap sanders 120 - 400 grit for a majority of my restorations in the past but it is not something to be recommended to newbs with no experience in using motorised abrasives.

You must have respiratory & eye protection. The rooster tail of fine particles off those things is huge.

You must have a magnetic or similar jig to hold the razor flat or risk the flap sander spinning the razor over & taking a chunk out of the edge. There is always a risk of this with any freehanding with dremels e.g. if doing the top of the spine unsupported.

You must have cold water on hand to cool the razor or make very light infrequent passes.

The process is actually not that fast compared to hand sanding but saves on RSI.