I normally use Hot Boxes but occasionally have jobs where there isn’t an adequate electrical source nearby especially for the larger boxes that require 240 volts. I thought there was a topic on this subject some time ago but didn’t find anything doing a search of the general forum.
Sorry for the subject line. I noticed the mistake as I clicked post. I don’t think I can edit the subject line.
[This message has been edited by caselec (edited 09-22-2005).]
I know you guys are probly bending big stuff but the other day at my parts house I saw some big springs that you slip inside 1/2" and 3/4" then just bend it cold. The counter guy did a demo and it worked fine. They are made by a Mom & Pop outfit.
How could they bend PVC cold? It would just snap back to its original shape as soon as you let go. My guess is that the spring keeps the PVC from "folding" while it is bent hot. Once cool, you pull off the springs.
Talk about deja vue. When I was a first year apprentice over 30 years ago, we would use propane torches to heat PVC for bending. Sometimes we would ignite the conduit. Nasty black smoke. Ugly scorch on the pipe too. The Hot Box was the expensive alternative only the big contractors could afford.
Propane torch my foot! Why, back in my day all we had to use was the muffler on any available truck, backhoe, or genny set and we still managed to run a couple thousand feet of bends before lunch time, dag nabbit!