On Sat, 03 Apr 2010 21:22:39 -0700, Jeff Liebermann wrote:

Some maniacs have gone to 100 PSI and up by reinforcing the
bottle with duct tape, but methinks 50 PSI is a good safe limit.

The article suggested 150psi (and says 100psi is generated internally if
you drop any common soda bottle); so, as an experiment, I donned welders
garb (helmet, bib, and heavy gloves) and pressurized the 1 liter seltzer
bottle filled with orange juice to 150psi ... and ... nothing happened.

Well, the orange juice was really fizzy when I removed the pressure and
removed the cap; but what I mean is the bottle held 150 psi with aplomb!

I was too scared to go higher than 150 psi though (I had ammo of 800 psi of
c02 available).

I remember reading somewhere they test automotive tires by filling them to
200 psi of water to see if they'll blow (the water apparently lessens the
danger).

Anyway, it's amazing how well engineered a 10 cent throw-away soda bottle
is!