[Public-list] Rudder - almost there

[John Irving]

If you are using epoxy resin (which you should be), beware that mat is
usually not recommended because it doesn't wet out well with epoxy
resin. If I were doing this project I'd use epoxy resin, and probably
6 or 10 oz. fiberglass cloth, an epoxy/milled fibers mixture for
laminations, and an epoxy/wood flour mixture for filler. I'm very
interested to learn more about your project. Do you have pictures?

> the idea is to use alternating layers of mat (the chopped up looking stuff)
> and roving (woven cloth). Did you use some kind of wood for what will be
> your core? I would go with at least 4 layers of light stuff- it is much
> easier to work around bends and corners, roving for last layer because it
> needs less grinding for smoothness.
> 
> I would also consider vacuum bagging (it's a convenient size piece for that
> process) to get the best resin/glass ratio for strength-at least, that is
> what the claim is. I know it reduces air bubbles and voids in your work.
> 
> Michael Grosh
> #220
> 
> 
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