Hey las, before you get to involved, maybe try and get your hands on a high quality infrared camera. Start with a cold slab, and turn on the heat, and see if you can map out your piping? I've got a light duty flat bed lathe as well, I feel your pain! (mine's a Craftsman/Atlas 12X36). It's actually not a bad little lathe, just painfully slow, as you have to take really light cuts.
Jeff
Atlas is mine too. Thanks for the suggestions. Now that I have the slab heat going, and if I can rent a camera(doubtful), both are preferable suggestions to what I've been thinking. I'll research. Not planning to do it until next summer at the earliest anyway.
I can always turn the heat off for a week or so to cool, then start over if I can find a camera. Pads sound better tho.
