I'm trying to make another herms coil for a friend and have already coiled the 25 foot roll of copper with no problem around a cornie, now comes the hard part.. The last time I did one I used a 1/2 bender to make the 90 degree turns, the issue arises that at the time I had one.. It seems to have walked off and I was wondering if anyone had another way to make the 90 degree bends required with out kniking the pipe like i've done so many wasteful times.