[TowerTalk] 80M 4 Square Array Material options

[jimlux]

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.