No problemo at all AFAIK. I used Raka epoxies and was told that I could even mix their very slow and very fast hardeners to get a medium-cure custom mix.

Remember that if you're applying fresh epoxy over any cured epoxy to sand the cured epoxy well to allow the fresh epoxy to "bite".

You need to be paddling your boat before October--switch epoxies! I'm not sure how MAS formulations work, but you might be able to just buy slow cure hardener and use it with the resin you already have -- of course, this will leave you with a bunch of unusable (by itself) cold cure hardener.

Shawn

> Started my North Bay between Christmas and New Years, and have been using
> MAS cold cure epoxy and hardener ever since. Other than the standard blush
> problems that you will get with MAS' cold cure material, it's worked out
> well, but I'm not quite finished. I have enough material left, but we're
> having temperatures in the low 100s F. in Maryland, and the stuff cooks so
> quickly now it's unworkable. Anybody know if the standard or slow cure mix
> from MAS --- or even from West --- would work on top of a base of MAS fast
> cure? Is there a chemical or bonding problem in switching manufacturers
> and is there a problem in switching speeds? Or do I have to wait 'til
> October to finish this beast?

> Jack Martin