Quote:
Fryxell and Applegate recommend sawdust as a fluxing agent. I used to use my bore lube which is another agent mentioned in their book. I am not yet able to determine if I get better metal from sawdust fluxing than I got previously but at least it smells better.
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I've tried several different fluxes but I never saw any difference whether I did or didn't, so now I don't flux at all.