My first melt with SOWW yielded a clean 4B/BNH 9; 4B smeared some and 3B was better.
Tested a number of the 45lb. Ingots and they all were the same.
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My first melt with SOWW yielded a clean 4B/BNH 9; 4B smeared some and 3B was better.
Tested a number of the 45lb. Ingots and they all were the same.
That seems a little hard for straight lead SOWW. IF the pencil (with the tip sanded flat) will make a groove/curl the lead, the lead is softer than that.
https://castboolits.gunloads.com/sho...-testing-trick
OK! I”ll give that a try and report back......Quote:
Originally Posted by Conditor22
My SOWW ingots are about bhn 8, a softer alloy but not pure. I think the fact they are thin gives the impression they are softer than they really are.
Pencils prepared as close as I could get them.......Quote:
Originally Posted by Cast10
I’ll hold with my original numbers. 4B makes a mark, but the 3B engraves.