2 blade fan "bullet-proof?"

[47topless]

My '31 Victoria has the stock, two blade fan. I am aware of all the inherent potential tragedy, regarding these fans, and their propensity to come apart and turn into flying shrapnel while the engine is running. Good (new), two blade fans, seem hard to find. Is there a way to "bullet-proof" this original fan, much the same way as you can "bullet-proof" a Columbia overdrive, and make this safe to use?
It would be nice to keep this original fan.
Thank you,
Phil