an idea to strengthen pvc chambers..

[BC Pneumatics]

Thanks Fiveseven.
Yes, PVC shows up on x-rays, as do lots of plastics.

At this point, I would like to point out the following:
Pete was incorrect, but has nothing to worry about, as it happens to everyone- often times more often than we realize.
Noname, on the other hand, was both incorrect, and now looks like a major asshole. When someone mentions you are wrong, do a little research before coming back with a harsh rebuttal... It will save you the embarrassment of looking like a fool.