Bill, I have no idea of the lay out or configuration of your shop, but I imagine that heat, in the winter is fairly important to you. These radiators, if you put them up high, out of the way, and then have a fan circulating the air around the room, would that work?
I honestly know next to nothing about these kinds of rads, how is the water circulated, only by the hot stuff going up and the cool stuff going down, or is there a pump?
I know on cars, with a pump, I've seen rads put in strange places with fans on them to pull air past them, on bikes, I've seen them under the seat with a fan, the rads were just about horizontal.
Would it be possible to suspend them from the ceiling, and lay them flat, then put a ceiling fan above them?
Again, I do not know the set up of your shop, it you have 12' ceilings, this is possible, if you have 8' ceilings, it is not.
So, if there is a pump in the system, you could put the rads anywhere, and at any angle, as the hot water would be forced to circulate, but if the water is circulated only by heating it, then you have way fewer options, I would think.
For $10 each, sounds like something I'd want to look at hard, adding humidity to your shop should not be that hard, just make sure you turn some green stuff fairly often, and this will give you the perfect excuse to not sweep up the wet shavings, you are adding humidity
Keep us posted!
The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
William Arthur Ward