[Tristan Lall]

If those are ordinary non-repairable cylinders like the ones Bimba has been providing for free for ages, you won't be able to do any rework with an FRC pneumatic system. The Original Line cylinders are rated to 250 psi with air, and the proof pressure is probably two or three times that (before something fails, which is likely to be the crimped seam that holds the aluminum ends to the stainless steel tube, provided that you've used fittings and tubing that will even work at that pressure). In any case, prior to failure, you're unlikely to get appreciable plastic deformation in the casing—much less the non-uniform deformation you desire.

The cylinder safety factors in place in FIRST are totally inconsistent with the rated pressure of the cylinders—but I presume that has something to do with other hazards of high-pressure air and the ratings of other components, rather than a realistic expectation of a catastrophic failure of a cylinder in a way that could expel debris. (At the pressures we deal with, any failure is likely to be ductile, and hence will absorb a lot of energy. Shrapnel is not especially likely. If penetrated, a cylinder will simply spew air rather than explode.)