I pencil test all the lead that I pour ( cup cakes ) soon as it is cool 2-3 hrs. w/ the " PENCIL " test ,,then come back 2-3 wk's later and scratch again ,, they have been staying the same ( pencil test ) ,, I use a magic marker to write on ea. B3,, HB,, etc. , etc., If I want a BHN of 11-12 , If,I mix 11 BHN with a 22 BHN , ( 1: 1 )to get back to 11-12 BHN ,, how close will I be ??? .
coffee's ready ,, Hootmix .