Thanks to a family friend we were able to obtain the requisite stainless steel tubing and plates for the price of polishing our own steel. The tubes were delivered with a dull finish. So one afternoon with a polishing wheel on the grinder later and the steel is ready for the metal shop.
FYI the lower half of the two tubes on the left are unpolished in the image.
I have also purchased a 3" X 10" X 10' piece of Sapelle for the wooden section of the gallows. Step two will be to begin shaping the wooden cross brace.