Tuesday, November 21, 2006


Pretty much everything that seems simple is not. If it seems simple then you probably don't know enough about it. Take Glue for example. Put two bits of wood together, some glue in the middle and it sticks right. Well sort of.

It needs to be waterproof. So that means Resorcinol, Epoxy or Polyurethane adhesive.
  • Resorcinol needs to be cured at relatively high temperature, won't fill gaps and need high clamping pressure.
  • Epoxy fills gaps, but doesn't like the cold and there can be problems with gluing white oak.
  • Polyurethane will fill gaps to .3 mm (small, tiny really), requires clamping, but doesn't mind the cold. It has a long open time that's not dependent on temperature.
Given that most of my work will be out of doors in winter in Ireland, I've just gotten 1Kg of Balcotan Super Fibre to try out. My plan is to glue the boat with this, then by the time it comes to glassing the boat, it should be a little warmer, and I can use a low temp epoxy. It's never really hot here.

I'm still kind of up in the air about glassing the whole boat, or just taping the joints and glassing them. We'll see.

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