As an old trad builder ... I have an aversion to CA. Why ? It creates a rock solid joint --- the emphasis on ROCK. It wicks into the wood and hardens up and any stress / impact shatters the wood at end of the CA to clear wood.
Its a fantastic adhesive - ONCE you have joints clean and actually mating properly. We all know the joint that LOOKS good but never sets ... you put extra CA ... still it doesn't take. Hot Glue ? Great for those foamies and quick repairs ... but also able to pull it away later to do a proper repair. My personal preference for Balsa (actually most kits today are not balsa - they are Lite Ply ...) are : 5 min Epoxy PU Glue (I buy Generic but most people know it by the name Gorilla Glue) The Epoxy is used sparingly creates a very strong bond and gap filling. The PU is very light as its a foaming material and can actually create fillets / re-inforcement when used ... If you have doublers or laminating to do --- then spray glue or Bostik style contact glue ... so it still retains flexibility.
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