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Fiberglass on XPS Foam - Polycrylic or Epoxy? (for RC planes)

Skip to results and summary: 5:13 I'm a newbie when it comes to fiberglass, so please leave comments! **Correction: Minwax Polycrylic is actually acrylic-based, not a true polyurethane or urethane. **4-29-18 Updates: -After about 40 flights, both the epoxy and the Polycrylic fiberglass-covered areas on my DIY Specter V3 plane are sticking and strengthening well. The only downside I see is that neither covering stuck well to the lightweight spackle I used to fill imperfections. -Denatured alcohol does not dissolve XPS foam (extruded polystyrene). Several things will dissolve it, however (acetone, benzene, CA glue, etc), but not denatured alcohol. I think confusion about this is the source of some dislikes on this video, and that's fine. *end of updates* I'm building my first hot-wire cut RC plane out of XPS foam (Owens Corning FOAMULAR 150) and comparing how well this foam covers with 3/4 ounce fiberglass using Minwax Polycrylic or Z-Poxy brand epoxy finishing resin. I compare adhesion, puncture resistance, and rigidity. I find that both of these are useful adhesives with different strengths! Thanks to NoddRC for making a similar video using DTFB:    • Nodd RC - 039 - Polycrylic   And thanks to the AMA for this fiberglass and Z-Poxy tutorial:    • Fiberglassing Tutorial with Greg Hahn...  . This is where I learned to mix the two Z-poxy parts together and split it with denatured alcohol.