Guys,
Also known as "freshening", a very common job for the gunsmith in the muzzle loading period. Perhaps the most common activity in the old time shop. Freshing was a process where the gunsmith would recut the rifled bore of the barrel. It is my belief that the old timers did not clean the bore as "squeaky clean" as we do today, so there was probably significant corrosion in the bore. Freshing would remove the corrosion "gunk" and very slightly cut into the sound metal, making the bore a couple of thousandths bigger at each freshing. Anyway, here is a box of well over 100 original freshing rods from the Fry brothers of Ligonier Pa, circa 1850.
The reason the Fry brothers kept the rods was to re-use them next time a customer returned for the next freshing. Probably the rifle barrel was freshed often. Also, these things are really troublesome to make, a lot of time and work to get the rod ready to use. So save the rod for next time!
I have copied / adapted the Fry brothers design to make my freshing rod as seen in the next photo. My rod uses a solid brass guide while the Fry rod uses a wood guide with a brass collar.
Here you see the lead freshing rod with the cutters, one cutter for the lands and one cutter for the grooves. The cutter is adjusted by paper shims. I fresh the lands first, and then the grooves.
The freshing rod is attached to a long iron rod the length of the barrel. The handle on the end allows for good control as the rod is passed in / out of the bore.
The whole setup is mounted on a wood bench. The barrel is held by wedges and the handle slides on top of the bench. The barrel is an original from a fullstock percussion rifle. The rifling is O.K., but a bit rough from corrosion, so I will fresh it.
I know that with our modern barrels we rarely do any work on the bore, but in the "good old days" the gunsmith would spend a lot of time with the freshing bench.
Jim