I am assuming 3% with the fixer N. Are you curing at about 300 degrees for 2 min? FYI I have a mini sprint w/ 10 feet of heat.
our standard mix is 3% fixer-N 3% retarder in our mixes, for discharge/waterbase 3% softener as well.
depends on the substrate... we've run as low as 230 degrees with great results, and excellent washability. It was explained to me by PJ when he was still at Matsui that you really are just evaporating the water and that there's really not a cross-link like wb/discharge when doing HSA.
we use a 10' mini-sprint as well
we run the belt at 4fpm when doing wb/discharge/hsa, so about 2.5 min in the chamber.