Originally Posted by
jaka
Hi!
As I said 11 years ago I use Ca glue for most of my building.I never use 30min epoxy! Glue epoxy is messy and heavy and is very hard to sand.
The bonding strenght of All glues is so good that it's not the glue it self that breaks. What's important is how the wooden parts fit! In your case gluing the fin to a sport airplane ordinary thin or medium Ca could be used and of course accellerator, thats a must!
And if I followed that line of thinking, my boats wouldn't last a competition heat of racing. As said above, most adhesives are very rigid, making them brittle in high vibration areas. Epoxy is, on the other hand, flexible when cured. While much of an airplane CAN be built using CA, I wouldn't use it for landing gear blocks or firewalls. The ability of CA and most other adhesives to hold two pieces of wood together is only half the battle. If it can't take an impact or stand up to vibration, how much good is it really? A hard landing/jarring impact can and will break a glue bond while an epoxy bond will hold up to it. I wouldn't even put a boat on the water that's built without epoxy in all the joints. As for an aircraft, I'd rather sacrifice a few grams and be sure than skimp and watch the engine/fire wall spiral away from my plane. BTW, my boats only do 50+ across the water using 50%+ nitro fuel, they don't just putt around the pond