[Elecraft] [OT] Tube Bender for Mag Loop antenna?

[rick jones]

I'm fabricating a remotely tuned magnetic loop antenna. I have the vacuum cap and stepping motor tuning system built and ready for a loop. Do any of you guys/gals especially in 3-land have a rolling tube bender so I can make my 3 foot copper loop? I don't want to hand-bend soft copper and would rather not buy a bender for such limited use. I could possibly build a light duty one but U-channel pulleys that will accommodate a 1.1" OD copper pipe are impossible to find online or even on eBay. If any one reading this knows someone in the Mid Atlantic area who can roll a hoop, or can recommend a source for  >1.1" nylon U-channel pulleys, I'd appreciate it if you could contact me off list. Thanks for your time. PS I don't want to sweat solder an octagon. I'm trying to keep loop R to an absolute minimum.