5 minute epoxy for fin roots?

[Steve Shannon]

If you've done it hundreds of times you'll know that both in your head and your gut. If this is your eighth go, a little color might help the ol' gut even though your head is fully convinced ^_^

If I do any epoxy in my rocket classes I think I'll pre-dye all the A's & B's. Should help me inspect at all phases.

It’s especially helpful when the resin and hardener have been thickened.

 

[JohnCoker]

I used 5m epoxy for a long time and it works well. I think preparation of the surfaces (cleaning, proper temperature, roughing if necessary) is more important than epoxy brand.
https://jcrocket.com/3-key-techniques.shtml

 

[jmuck78]

Update:
Got some 5 minute, glued fin on, waited. Was getting ready to put second fin on. Rocket fell over, first fin fell off. I know I was just gluing the root, mostly to hold the fins in place for some big strong fillets...but still. Pulled the fin out and I was able to scrape the epoxy off with my thumbnail.
Mixed up some rocket poxy, first fin is drying overnight. Patience is a virtue.

The BSI epoxy work time is about five minutes, for example, but the package also says that full strength is reached in an hour.