Hey guys, I’m trying to get the hang of clamping, but I’m having problems staying erect. I’m using a Cable Clamp from Home Depot. I get erect, place the clamp at the base of my penis, and close it as tight as it will go and remain comfortable. I do notice that my corpus spongiosum hurts a little bit when I clamp, although it is sort of a dull ache, not a sharp, stabbing pain. Anyway, after about a minute I notice that my erection is beginning to subside, and the blood is draining out. Is there something wrong with my technique? Is constant stimulation required in order to clamp? Any help is appreciated.