Better Bed Mounting - Folger Tech Kossel revB

Edit 2016/08/07 - My new layer cooling has taught me the error of my ways. I've uploaded revised versions of the mount - one is 4.5mm and one is 6.5mm. That is height from below the heated bed, so the 4.5 is just about perfect for the bed and a thin cover (like a PEI sheet) and the 6.5 should be good for glass. I'm not making one for just the bed with no cover because first, you should just get some PEI because it's like printing onto a slurry of unicorn tears and pixie dust - that stuff is magi