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Reply to: NACRA 5.8 - large hole repair (looking for techniques/advice)

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[quote=yurdle]Remove everything that is broken, but don't shape the hole to be round or square -- you need to leave as much good material as possible for the shape of the hull/patch.

Lay up a very thin layer of glass on a flat surface (window or something w/ foil/seran wrap/wax/etc that is much larger than the hole.

Let it cure, then trim it just enough to fit into the hole.  It's fine if it is significantly larger as long as it fits.

It should try to retain it's flat shape, but you can glue it in place and use short sheet metal screws (and wood backing if necessary, although it has to be glued on ahead of time unless you have a close access port) to pull it out so that it mimics the curve of the hull.

After its glued in place, fill around the edges any gaps with fairing compound.  Then take a grinder or sander and create your proper tapers and shape.

Now you should be ready to vacuum some new glass on.

It will not be the same stiffness, but that's how I fixed a couple similar holes.  Take it fwiw.[/quote]

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