I made some infill shoulder planes and I'm not happy with my machinery or procedure for polishing the brass sides. Hopefully someone here can help me improve on the process. I used a 6 x 48 inch woodworking belt sander to grind off the dovetail protrusions and get the sides flat. I was able to work fairly well up through 320 grit but after that I couldn't make any improvement. Using a surface plate and rubbing the planes back and forth will work, of course, but I don't have that long to live. So what is the solution? Different kind of machine? Faster? Slower? Longer? Any help would be appreciated.
Regards,
Bill W.