Resin/Fiberglassing Question

[Tachyon]

Hello,

I am currently construing a costume out of 1400gsm boxboard. The card is pretty sturdy and I was wondering, would I be able to resin both sides of the card, and bondo the outside of it with out using the fiberglass? I really only need to waterproof the cardboard, resin might make it a little bit more rigid as well.

Cheers,
Tachyon

 

[Heatshock]

if you are planning on wearing this armour, personally I wouldnt; but you can but try.

its just that cardboard is intrinsically still quite flexible even when resined, and bondo isnt; so if you are gonna be moving quite a bit in it, it might just crack.

I have tried 'just resining + bondo' before; but only on a small piece or on a static build which I was gonna mold up later

Nate

 

[Tachyon]

Ok, so I should only use it on small things, like the belt buckle, but for larger parts like the chest plate I should still fiberglass? Thanks.

 

[terryr]

You mean a cardboard box? The center will come apart eventually. I've made simple shapes from a box, then fiberglassed one side and soaked the cardboard in water to remove the rest. Then fiberglassed the back.

 

[Tachyon]

Ok, that makes sense. So fiberglass oneside, soak in water to remove all the cardboard then 2nd layer of fiberglass? Or bondo on the fiberglass? (Sorry for sounding like a complete noob).

Can I still get away with using resin only on the smaller bits? I also have a backpack I need to do, should I fiberglass this also? (Removing the card will be tricky because it is is inside the sealed backpack...)

 

[crypto]

Tach you misunderstood what terryr said. He is taking about a cardboard box not the stuff you are using.

With your boxboard/posterboard don't be putting resin on it and then soaking it in water, you will end up with a soggy mess.