Very efficient machine....but, could you replace this annoying set screw needing an Allen key ( hexagonal ) by an efficient wing nut or tumb screw, on top of each jaw.......Please!
Or... you could not waste ass loads of time and labor in doing something that automatic machines in china do and just buy the pickets and stampings already made for dirt cheap from King Architectural metals, make a profit off of them instead of wasting hours making your own and then just weld them into your rail.