I was bending the 1/4" ID soft copper around a 1" pipe and the result was 23 turns and about 13" long(used about 13' of the copper). I filled the tube with sand and used a spring bender but I just can't seem to get clean bends. I'll rap 7 or 8 coils and then run into a kink. I've tried heat and I think it makes the pipe more likely to kink.
In most of the posts I've read people are using 16-20' of copper and getting a coil ~12" long to go into a 2" shell. Should I be using 1/4" OD pipe? It doesn't seem possible to wind 20' of 1/4" ID pipe and get a coil the size most people are using.
Thanks,
BigA
