I'm building a weight bench for my son and I.  It'll be primarily 2-1/2" and 2"
square tube.  Swivel pad feet will attach by screwing into welded on 3/4" hex
heavy nuts.  Also, adjustable seat mounting tubes and the bar rest uprights
will adjust by means of dog screws through the same nuts into 1/2" holes
drilled in the 2" tubes.

I used some of the parts, a dog screw and foot mount, as a jig to drill the 
holes in the 2" tubes.  The photos are as follows:

HoleJig01.jpg	1/2 slice of square tube as shim, dog screw in foot mount,
		123 block to locate other axis.
HoleJig02.jpg	dog screw.
HoleJig03.jpg	dog screw in 1/2" hole.
HoleJig04.jpg	123 block.
HoleJig05.jpg	ready to drill hole.
HoleJig06.jpg	hole drilled.
HoleJig07.jpg	holes completed in upright tube.

I laid out the first three holes, used a wiggler to make the first two good,
used the wiggler on the third to locate and clamp the jig components.

Pete Keillor
keillorp135@chartermi.net