Originally Posted by GradeA_TireFryer
that is why i said to coat with resin!
I'll have to do some looking...the guy at Lowe's by me just gave me a funny look...
These tubes are rigid enough for two reasons. First, they are thick. Second, they are round. For tubes, round is the most pressure resistant shape that there is. Think about it in PSI, and vectors. In a flat sided box, say 12x12x12, you have 144 sq inches, in any one direction, to apply pressure to. In a tube, you really don't have any sq inches in the same direction, since the sides aren't flat.
Toby