"Fortifying" commercial Cap shield

I'm going to be Captain America and have a low budget so I opted for the commercial one available, TFA one. While its better than the standard one, I'd like to somehow make it more rigid and stronger.
I'm trying to think of what could be added to the back of it. It's obviously round and oval, so take that into consideration.
Maybe some substance that can be painted or sprayed on.
I've never used plasti-dip, would that make it more fortified?
If so where can I get it?
Thanks!

 

Anyone,.... McFly??

After 119 views?

No ideas?

 

This is just a guess as I've never done anything like that before, but mabey try some form of polyurethane resin and slush it or add poly fiber to it to make a paste and apply it. Car filler watered down with alot of fiber galss resin might work but your'd need alot of resin and it would heat up alot. Mabey strips of fiber glass matting.

Hope this is of some help

 

i would say the same thing, is the one you have the plastic one? I'd use something like Smooth-cast 321 from smooth-on with some fiberglass mat or cloth

 

Resin, and glass it.

 

Thanks guys!

 

Hi david,

I would suggest a layer of fiberglass and go a little heavy on the hardening compound.