Started in on polishing the lock. Took some elbow grease with the sanding sticks I use, but had the lock plate done in about an hour:
Flint cock took another half hour to get to this point......
Only the frizzen to go but needed to anneal it first in preparation for both polishing and then engraving:
This is a comparison between the "as cast" part and what I consider to be a sufficient level of polishing:
By the way, this is the little 110 VAC furnace I use for a lot of heat treating and casting larger parts like trigger guards and butt plates. These are fairly expensive new, but they can be had used for a reasonable amount. In this case. I used it to anneal the frizzen. I covered the part in crushed charcoal (to prevent scaling) and ran the furnace up to ~ 1700 degrees F. Then I just turned it off and came back in a few hours to pull the frizzen out.....nice and soft now.
I use this for gold and silver work and it can easily melt brass and copper alloys of all sorts......anything but iron and steel. And, of course, I can use it to case harden or heat treat parts as well.