Welding Tips and Tricks

So recently I was able to purchase a 18 inch lathe face plate and 12 in 4 jaw chuck for 125 bucks. I really want to make my own heavy duty rotary welding positioner. My big question is what have you guys done for the motor and gearing? I'm thinking along the lines of an Ac motor with a VFD, but I would also like to incorporate a foot pedal and possibly a speed dial. Has anyone here done anything like that? Pictures would be much appreciated.
I am certain I could make a heavy duty positioner cheaper than I could buy a light duty positioner.

A little cleaned up, oiled and greased

I've been wanting to do the same and have this thread saved. http://weldingweb.com/showthread.php?28 ... Form/page2 I think there was a build here that I bookmarked but can't seem to find it now. Keep us updated how this goes. Looks like you have a great start

Here's a good one. http://www.mig-welding.co.uk/forum/thre ... ild.17540/

Another good one. http://www.garagejournal.com/forum/show ... p?t=139609