Resin Mando armor and fiberglass question

[CaptainMando]

Is it a good idea to apply fiberglass to the back of resin Mando armor?

 

[Halo 1]

It's a matter of preference. Should you decide that you want to, rough sand down the resin piece before applying the fiberglass. If you're using fiberglass matting, I would suggest tearing the matting in two, thinner pieces [fillet style] and use that to layer. Just me. Good luck!
I myself have armor that both have and doesn't have carbon reinforcement.

 

[SaiyanCookie]

I was also thinking about doing this to my resin helmet because I heard they can warp over time? Would fibreglassing the inside help strengthen then structure? Is it even necessary?

 

[Halo 1]

Unless your resin helmet is really thin and is often exposed to heat, it should be fine as is. But if you feel that you need some sort of overprotection comfort, by all means, go for it. I like my helmets tough, so i then to carbon/fiberglass those without. Plus the added weight, IMHO, feels more 'real'?
Good luck!