While I have never actually had a problem with any epoxy that I used for bedding, and I have used a bunch of them, in the many discussions I have had with research chemists for various epoxy manufacturers, they all said the same thing. The slower the epoxy sets the stronger it is. Slow-setting formulas speeded up with heat are no stronger than fast-setting formulas.
For that reason I always do what I can to slow the set down, rather than accelerate it. I will freely admit that I don't know that it makes any real difference though...
The steel-bed is quite a bit denser than standard epoxy so I don't use it in rifles that I am looking to keep the weight down on.
art
