Get a buffing wheel for your bench grinder, great for polishing bone, wood, brass you name it.
Also found a B/D finger file a great tool as well. I use antique clamps to hold scales in place.
Save your offcuts then you can have multi materials on one side, be a bit wary of brass as it gets hot and melts glue. Pic is of one I wont sell as made it from Billet Damascus bar