> Using MAS epoxy

> From time to time I have used some fast hardener for small jobs, cheek
> plates ect. The problem I'm having is the stuff is not getting hard enough
> to sand. I have had no problems with the slow hardener, in fact it is
> sandable before the fast. Also I am using a container graduated in CC's
> for mixing and am mixing for 2-3 min.. so that is probably not the issue.

> Has anyone experienced this problem. Do you think the hardener is bad ? Is the epoxy soft all the way through or is it just sticky on the surface? The slow hardener does not form a surface blush but the fast hardener does. Kenny