Probably should have asked this before: What rocket/ size of motor did the centering ring let go on ? In any case, JB Weld is certainly one way to go.

5 minute epoxy is a LOUSY adhesive.
For all structural applications use 15 or 30 min Epoxy.
It has strength of several magnitudes above 5 min epoxy and does not let go when heat-cycled.
It soaks into the materials, it does not just sit on the surface like 5 minute types.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !

A 19mm it let go on a C65, ejection charge did it I think.

I'm a woodworker and swear by PVA glues / carpenter glues. I use Titebond, and the wood-to-wood bonding is incredible. I laminate different species of woods for platters, as well as lathe turnings like peppermills. I've never had a joint failure. The wood will split or tear before the joint will break free.

If you are worried about moisture weakening the joint (say what? I live in Colorado. The only damage due to moisture is if you leave the rocket out in the snow over the winter ...) try Titebond III. it is outdoor rated, and has a longer working time than Titebond I.

Foe model rockets that are wood-to-wood or wood-to-paper, I would likely never choose epoxy over Titebond. If I do use epoxy, I use the 30 minute variety. I just do not trust the 5 minute stuff.

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Lee Reep
NAR 55948

Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor
In the Paint Shop: Nothing! Too cold!
Launch-Ready: Farside-X, Maxi Honest John, Super Scamp

I like to hang my rockets in trees, so maybe I should invest in some III.

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Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Mini Dactyl Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle

In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III

Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2

I think you will find that to be a wise decision ...

Wait -- you will have to decide if you'd rather they get soggy and fall by bits and pieces. Might mean getting something back you could reuse, like a plastic nose cone, or an engine hook!

__________________
Lee Reep
NAR 55948

Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor
In the Paint Shop: Nothing! Too cold!
Launch-Ready: Farside-X, Maxi Honest John, Super Scamp

That would require tromping through weeds and underbrush and other outdoorsy crap. I'm happy to let them age gracefully as they hang as a testament to my building talents.

__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Mini Dactyl Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle

In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III

Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2

I haven't either. However, every year I hear or read about someone that has used it for years suddenly developing a reaction to it.

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I love sanding.

+1 to this... I use wood glue for about 95% of rocket construction myself. I use white glue for probably half the rest at least. CA is practically worthless IMHO except for hardening balsa parts. The only attachment duty I'd use it for is maybe tiny detail parts on scalers or something. I'd never use it to attach fins or anything critical like that.

Epoxy has its place, for things like tube couplers and stuff that can "stick" halfway in with wood or white glue... and even then, yellow or white glue CAN be used if used correctly. Therefore I use practically NO epoxy.

Double glue joints for attaching fins are as fast as using CA, and stronger than the materials... the fin will disintegrate or the tube delaminate, but the glue joint itself will remain intact... I've seen it myself. Once the glue joint is stronger than the materials it's joining, there's really no point in going stronger... LOL

Later! OL JR: )

__________________
The X-87B Cruise Basselope-- THE Ultimate Weapon in the arsenal of Homeland Security and only $52 million per round!

Quite true...

Someone was telling me here while back about some guy that used to do tons of fiberglass layups for HPR, just practically bathed in the stuff, never gave it a second thought...

Until one day he developed sensitivity allergies to it, and then had to give it all up because it got to him so bad...

So, be careful... might not be today or tomorrow, but eventually....

Later! OL JR

__________________
The X-87B Cruise Basselope-- THE Ultimate Weapon in the arsenal of Homeland Security and only $52 million per round!