Canoe wrote:...Both tapes should be a good choice for this, as you can always add more strips to provide any extra strength you need....
I'm already disagreeing with myself.
As you'll be disassembling the shelter, folding it up and using it again, for this folding pyramid shelter the gaffer's tape is the best choice for where you'll be removing the tape
- sealing the two inside seams once you lift the shelter up, and
- taping across the joints on the outside if you're adding strips of tape for additional strength across the corner outer surface gaps.
Adding a few strips across the outside corners means those seams aren't relying solely upon the 'outside' tape hinge strip gripping the back of the 'inside' tape hinge strip to prevent it from peeling from the panel's inside surface when under a strong wind load. Particularly under a strong wind, where that gap will be subject to pressure as the air flows over those corner seams.
Given the low peel strength of the gaffer's, I'd prefer using the bi-filament tape for making the hinges for the folding seams, for both inside and outside.
6" bi-filament is easier to apply (you don't have to worry about being off a little in alignment, but you're doing this taping at home before you head for the playa, so that's not a big deal).
This is looking like a really interesting design.