I too heard that applying goop into the swage before swaging weakens the overall strength of the assembly. Swages rely on metal to metal contact for their strength so applying goop before swaging would be comparable to adding WD-40 to Super Glue. Regardless, in most cases, this is a non issue because the safe working load allows for the reduction of strength due to the goop.

Thinking of swaging machines and the notion that two passes on a roller swage causes too much fatigue, I ask what makes a rotary swage machine any better than the rest if it beats the crap out of the swage fitting? I've seen some swages that were formed with a rotary and the stainless had been worked so much that it changed to a darker color. Sure, theyíre smooth, but also work hardened. Again, this is a non issue because of applied safe working load