Insomnia and cable are a bad combo. I’ve grown fond of a show called
"How It’s Made". It’s a bunch of short segments about how various
products are made. (shockingly.) Oddly hypnotic.
They did a bit about making trumpets, and therein lay a really neat
trick for bending tube without letting the walls collapse. We all
know the old trick about packing the tube with sand. Which is a real
pain in the tail to keep it from leaking out. I go back far enough
to have seen the same thing done by way of pouring the tube full of
lead, and then melting it back out once the bend was done. Getting it
in was easy. Getting it back out without frying your silver or gold
was all sorts of fun.
The trumpet guys had us beat all hollow: soapy water. Fill the tube
with water loaded up with so much dish soap that it was blue, then
freeze it. (It looked like it was at least 50/50 blue dawn
soap/water.) Once frozen, proceed to bend. The soap keeps the ice
from shattering, and being ice, it doesn’t want to come out of the
tube on its own. When done, just let it thaw. No muss, no fuss, no
Way too slick. Wish I’d thought of it. Thought I’d share.