[ATM] Tees instead of triangles

["Alan K. Henderson" <alankh@ev1.net>]

Can't remember where I saw this, but somebody out there has a large aperture
scope where the "triangles" are made from 1" square tubing welded together
in a T shape. The tee would be made from either two tubing sections (one
vertical and horizontal section each) or three (two horizontal sections,
welded to either side of one end of the vertical). If I use the two-section
design for my upcoming project, the center of the hole for the "triangle"
pivot bolt would be only .22 inches from the weld; assuming a quarter-inch
bolt, that's 1/8" distance between the edge of the hole and the weld. Is
there any reason why drilling that close to a weld (or welding that close to
an already-drilled hole) is a bad idea? If so, I can always go with the
three-section alternative, even if that means extra welding.

Alan K. Henderson


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