DocAitch
Active Member
polishing brass
I aim for the outside of the brass to be shiny and the inside is generally clean(unusual) to totally black.
I don't think that matters since it is the carbide ring of the sizing die that I am trying to spare (plus I like shiny brass). I rarely tumble brass for more than 2 hours.
I use Dillon case polish and some mineral spirits in the media.
I don't like the jeweler's rouge rouge that came on the walnut media that I used one time.
You might try to reduce the amount of brass in the tumbler but that is hard to estimate form your photo
DocAitch
I aim for the outside of the brass to be shiny and the inside is generally clean(unusual) to totally black.
I don't think that matters since it is the carbide ring of the sizing die that I am trying to spare (plus I like shiny brass). I rarely tumble brass for more than 2 hours.
I use Dillon case polish and some mineral spirits in the media.
I don't like the jeweler's rouge rouge that came on the walnut media that I used one time.
You might try to reduce the amount of brass in the tumbler but that is hard to estimate form your photo
DocAitch