RSULLIVAN,
I use the presto pots with mixers and remelt all my sprues. I demold and pour the next pass, then I cut sprues and throw them back in the pot. Next I lay the baits out and demold again.
The sprues don't have to reach any certain temp.
Heat stabilizer is not limited to microwave use, I use it anytime I'm making white, clear or any light colored bait.
There was a member here that was making baits commercially and sold his here. I have also seen some on Ebay.