Thanks guys for all your comments. Steve - yes I am sort of anal about the hardware. I actually file then polish the heads of my screws to sort of contour to where they are placed. Then just tease the shank of the screw into a flame on a propane torch until the head starts to turn from straw to purple, at that point they usually turn to blue on their own. Just more of an aesthetic thing than anything, but I do like the feel of smooth - no burrs, humps, etc.. Yes, I did also blue the tumbler & hammer screw heads also.