Your choice of epoxy
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#1 answer= JB Weld regular (NOT the 'fast cure')
GregGleason
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Like Mr. wrxz says, for strength AND heat resistance, JB Weld.
But nose cones are not subjected to that much of a heat soak, so most epoxies would be fine. They may have a high-temp spike for a few milliseconds, but not enough to effect the chemistry.
What strengthens the joint are the amendments (e.g., things you add to the epoxy; such as milled fiber, chopped carbon, fumed silica, Kevlar, even saw dust, etc.) that give it strength. That's because epoxy by itself is quite brittle.
I use JB Weld, Loctite 5-Minute, and Aeropoxy laminating and adhesive epoxies. Which one of those I use depends upon the application - "The right tool for the right job".
Greg
But nose cones are not subjected to that much of a heat soak, so most epoxies would be fine. They may have a high-temp spike for a few milliseconds, but not enough to effect the chemistry.
What strengthens the joint are the amendments (e.g., things you add to the epoxy; such as milled fiber, chopped carbon, fumed silica, Kevlar, even saw dust, etc.) that give it strength. That's because epoxy by itself is quite brittle.
I use JB Weld, Loctite 5-Minute, and Aeropoxy laminating and adhesive epoxies. Which one of those I use depends upon the application - "The right tool for the right job".
Greg
I'm with Greg on this one. I have Loctite, Aeropoxy, Proline, JB weld, US Composites medium and fast. For structural joints, I prefer Aeropoxy. I built my L1 fiberglass rocket with 30 min. epoxy. Worked fine. After some landings on the Salt Flats, all the epoxy was cracked. I tore the entire thing apart by cracking the epoxy and rebuilt it using aeropoxy. My unsuccessful L2 attempt with no chute deploy had a bit of a hard landing on the salt flats. I only cracked a partial fillet on one fin!
dixontj93060
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Laminating: US Composites 635 resin and medium hardener.
Structural: System Three T-88 w/ a mix of milled and 1/4" chopped fiberglass.
Tacking: System Three Quick Cure.
Fillets: Bob Smith 15 minute w/micro-balloons.
High-Temp: JB Weld (original)
Structural: System Three T-88 w/ a mix of milled and 1/4" chopped fiberglass.
Tacking: System Three Quick Cure.
Fillets: Bob Smith 15 minute w/micro-balloons.
High-Temp: JB Weld (original)
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