deker said:
I mostly agree with what folks have said already, but wanted to add one thing. When draw filing, I use a single-cut file. Seems to leave a nicer finish IMHO.
Just my $.02.
-d
You are spot on.
Nearly all filing, while doing firearms, is draw filing.
A good file card and a chalk block or " elephant turd" are essential items.
I love old Black Diamonds.
They can be somewhat restored with a quick acid dip...
I'm a sick puppy

but there is no greater file challenge than restoring an octagon rifle barrel by draw filing WITHOUT leaving waves.
This is measured with a micrometer. .006 is my tolerance
This means that every mm of the barrel gets the same amount of material removed, from end to end ,all the way around, untill all of the pitting is gone.
When I start building knives ( soon) the same methods I know for stock removal will be used.
I need me a Dozier grinder
The forge is nearly done and the heat treat oven is at a buddies T&D shop... as is the RC tester
Dont expect anything wonderful.. I'm a gunsmith, not a knifemaker.. the best I can hope for is some duplication of current designs, with a gunsmith twist.. like HAND checkering, color hardening, bluing, engraving, and nice, unusual, woodwork..