Jim Reed wrote:
I am in the midst of fixing some farm machinery with new sheetmetal. The
metal I am using is 14 gauge, and the proximity to moving parts requires
carriage head bolts. The previous metal used 1/4" carriage head bolts, and
I would like to do the same. I don't have any idea how to create the square
holes. Each piece of metal is roughly 3 feet by 2 feet, and the holes will
be within 2 inches of one side of the metal.

Any help would be appreciated.

How about a bolt like a lugbolt on a car? A short splined section up
near the flat head that is pressed into a round hole.


--
Gary Brady
Austin, TX
www.powdercoatoven.4t.com