Larry,
I'll try that tonight. I made up some this morning, using 24 drops for 1.5 oz. The instructions said to increase drops 50% if the resin didn't cure properly. When I get home, we will see. Thanks for the suggestions.
Cris,
I think you are going the wrong way with the MEKP. The instructions that come with the resin are for laying up fiberglass cloth with the resin. The resin needs heat to cure, and with the thin (approx 1/16") layer they are talking about, more MEKP is required to develop that heat.
Casting a pen blank, requires less MEKP not more. The thickness of the blank allows for the heat to be generated and maintained. If you use the amount of MEKP stated in the instructions, you will generate too much heat too fast, causing the cast to be brittle and it could crack.
You might want to look at the whitepaper that is linked in the thread "PR Whitepaper. It is a little long, but has alot of good info on how PR cures.
Just remember, The right way is the way that works for you, not the other guy.