On 1/29/16 12:48 PM, Patrick Greenlee wrote:
How about welding the lower non adjusting pieces?
Has anyone ever heard a credible story about a 4 square made of
irrigation pipe that failed? You could always insert a structure inside
the irrigation pipe to stiffen it. A design in wood should be
inexpensive. Some of the spray foams might be just the ticket.
Lots of tesla coil folks have tried spray foam inside various things to
make an inexpensive, but rigid toroid. The foam doesn't cure well in a
closed, unventilated space. Maybe as a pipe connection between two
sections.
How rugged does it need to be? Irrigation pipe is fairly thin wall, and
often dented. A hunk of wood and long drywall or sheet metal screws
might work well.
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