Fiberglass Resin + Resin Jelly = Stronger than Rondo?

So I'm working on my second try at the First Class Magneto Helmet, and i have coated the inside with A mixture allot like Rondo, but substituted Bondo with Resin Jelly, I seriously feel like it works better, its tougher and helps reinforce the inside of the helmet to where it does not bend when being sanded.

Has anyone else tried this?

I never really liked that Green jelly, maybe it's me, but those little fibers inside the stuff make me itch just looking at it. unless there's a way around that?

JohnWayneProps said:

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I never really liked that Green jelly, maybe it's me, but those little fibers inside the stuff make me itch just looking at it. unless there's a way around that?

Fiberglass Resin mixed with it, turns it into a smooth liquid clay type material. It Harden's stronger than bondo. I can only describe it as plastic.