Strait:
Thanks for the comments. The grid magnet board is from something called a Magna Jig. It was sold years ago by Tower Hobbies. The plastic jig pieces were crap but the board and magnets worked OK. My Mother in Law bought it for me for Christmas a long time ago. She was the best Mother in Law a guy could have! Even bought me some new Callaway golf clubs a couple of years later.
The wood clamps I bought from the guy that runs airfieldmodels.com. Great website for building info by the way. Anyway he likes magnetic jig systems and was selling these clamps to be used by folks that were building their own magnetic jig system. I bought a bunch of them.
I think it is the best system since the building board!