I have been dipping Estes starters in the acetone/ping pong ball mixture, too. Recently I have added some Quickdip mix to the goo and it has worked well. DARS does a lot of outreaches with scouts and other groups. Always have some of these igni...starters on hand. Went though almost 20 at one launch. I dip them far enough in the mix to coat the two parallel sections of the "item" to help insulate them.

Chas

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Charles Russell, MSgt,USAF (ret.)
NAR 9790, Lvl 1
SAM "Balls Three"