I don't think I use to much tin in my mix ,, just found 10 # of solder ( i'm not a hoarder,, i'm not a hoarder ,, repeat ) I didn't know was in my unused supply ( pile ,, i'm not a hoarder ) . I use pencils to test all my lead's ,, before mixing ,, "so far so good ", I mould a few and test w/ pencil ,, ( I think they get a little harder w/ age ) and I try to test to the softer side , if all is good I cast ,, if not add to the mix,, I try to write down how & what I mixed ,, but I use a lot of range lead & WW ,, ( i'm not a hoarder ). Anyway just a rainy day subject.
coffee's ready ,, Hootmix.