hahaha. eh sometimes im the same way though. im deff a nerd and I’m really trying to learn more about fabrication despite my limited resources and friends that do that kind of stuff. Thats a lot of really good info though thank you. I’ll probably go with a slightly cheaper resin/epoxy. Then again considering how much abuse a diffuser would take (rocks, exhaust heat, and occasionally scraping the asphalt when i drive through a pothole in the troylet) maybe i should use something that’ll hold up the first time. As for the mold the plywood was just going to be a frame for the fiberglass to sit on because the wood cant form the smooth curves i want but the fiberglass cant hold the rigidity i want. MDF sounds like a good route too though. Who is his Jim character? Thanks again guys.