Originally Posted by ssaahemifan
I had trouble using SPI Epoxy and metal prep even though I scuffed the treated surface before epoxy.
I have always metal prepped every car I do. This was the first time using SPI epoxy and I had some adhesion issues.
I was going to abandon it for a different epoxy that is compatible with metal treatments ??
Maybe I don't have to???
SPI says no etch products.
Actually its not that they say no,they dont RECOMEND them.Heres why:Metal prep has to be done right,It will work with just wax& greese remover prep so barry is just playing it safe,I use SPI exclusively now,I'm that impressed with it.As for your adheasion problem:lets start with the primer,Did you let it cure?sometimes it takes a week to cure,it depends on how much build you have(I use my finger nail),if it dents the primer its not ready.Now for the metal prep part ,explain what you used and your procedure.This is THE most important part of any job so it must be done right.