First, I'm new to the forum, so thanks for letting me join and post here. I hope this has some value for others.

I've been working on building this sauna tent for about a year now, and have a pretty good working model. It's a hexagonal dome, using a 240g poly fabric (for it's water repellence and flame resistance), and measuring 9.3ft corner to corner (or 8ft side to side). Can fit about 4 people including a mid-size 25L stove.

https://www.instagram.com/p/CYldWHyKUD4/

I used pre-made 8.5mm x 17ft poles as the basis for the frame and built from there. A silicone baking sheet forms the chimney collar.

For those that aren't familiar, these portable tent saunas are somewhat common where I live now, in Denmark, and it keeps a respectable temperature inside for a steam sauna - 150F degrees. It could also work well as a hot tent for 1-2 people. It has an internal height of about 5 and 1/2 feet and the whole thing only weighs about 8 lbs - minus the stove.

I was inspired by the traditional American sweat lodge design - dome shaped and willow branches - to make it like this.

Anyways, I'd like to take it to market, but I think some things need refinement and I have no idea how to source competent design advice or materials, and was wondering if anyone had any advice or just thoughts in general. For example, I think there could be better fabric choices, and I think the 8.5mm poles are undersized (but am unsure if larger diameter poles will achieve the same arch shape), but would rather get some consultation before investing more in materials.

Thoughts?

[img]/https://www.instagram.com/p/CYldWHyKUD4/[/img]