Most tank reinforcements/repairs that I've seen, involve using PVC end caps or the like. The only
problem with this is being able to find an end cap that will fit. Especially if your tank is an irregular shape.
Although the tank in this write up (SM3K) would be relatively easy to find an end cap for, I wanted to illustrate a method that could be applied to virtually any air tank.
This occurred at roughly 3.5 pumps (stock pump, plugged).
I've tested my reinforced tanks against my equivalent non-reinforced tanks and can say that they can handle at least twice the psi.
I'ved pumped my reinforced SM1500 tank up to 90 PSI with no sign of rupturing, where as my non-reinforced tank blew after a few shots at 45 psi. My AT3K is more than adequate at 45 psi but I've had it up to 80 psi without incident.
The SM3k tank above, could only take a maximum of 4 pumps before. Now it takes 8 pumps, no problem. It could probably handle 10 but I'll keep it at 8 just to be safe.