Hi Kevin, all, > I was pondering on the building of my new primary coil that is > being made out of 1" dia soft copper tubing. I thought I could > save space by flattening the tubing first, possibly using 2 > rollers and a crank of some sort. Does anyone see a problem with > this idea, before I flatten my Cu investment? Sounds like a great idea. More L/unit volume with the benefit of the tubing to boot. Love it. Malcolm