> 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

Jack,

I don't think you'll have a problem switching brands. I would make sure that your base of MAS epoxy is cured beyond the green state, and I would sand the base to insure a mechanical bond - I wouldn't count on any type of chemical bond to take place.

I have never used MAS, but aren't their different hardeners compatible with one another? It might be cheaper to just buy some slow hardener from MAS for use with your remaining resin.

George