I have used the thick epoxy (150) with the 1 to 1 hardener. I used it only for mixing up goopie, fillers, etc....stuff like that, never for laminating or fill coats. I wasn't planning on buying anymore, but now that I don't have any I miss it. It is faster and worked very well the way I was using it. I think I will try it in the future for a fill on a very small job and see how it works. I use the 4oz. and 6oz cloth...and their fillers. The cloth has come on rolls...not folded. I'm happy.