Zap CA superglue.
The penetrating or wicking ability of this glue makes it a favourite of modellers around the world; the thin formula allows the glue to go where most cannot.
Balsa wood is bonded almost instantaneously, with the glue sometimes travelling several inches into the parts.
Some uses besides hobbies and crafts include; jewellery manufacturing and repair, taxidermy, mold and pattern making, furniture refinishing and antique repair, auto detailing, archery, darts, dental moulds and patterns, and ceramic repair.
Wood turners like the penetrating ability for hardening soft areas and preventing the propagation of cracks. Furniture refinishers can count on ZAP CA to wick under loose veneer without having to remove the piece and chance damage.
Mould and pattern shops coat the outside of the wood pattern, hardening it for final finishing. Cracks almost disappear in ceramic and hardened plaster pieces. Use it on fiberglass and cloth to bond, reinforce, and strengthen wood parts and assemblies. Plastic parts can be joined with an almost invisible seam.