Fiberglass Tape: Holding To A Curve?
Per Jim Conlin:
Cover the wetted tape or cloth with peel ply (a nylon taffeta fabric). Cut
the fabric extra wide (6-8") and pull it taut across the joint with duct
tape on its dry edge. The peel ply can be peeled off the glass after the
resin has cured. In a pinch, nylon taffeta from the yard goods store will
probably work. Test first that it can be peeled off cured epoxy.
I did an end run: used overlapping pieces of stretchy electrical tape instead.
Seems tb working pretty well.
How about this:
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- Tack one side of the fiberglass tape down by painting a thin coat of resin on
the hull's surface and then just smoothing the tape onto the resin - leaving the
other side of the tape sort of sticking out, not following the curve.
- Wait for the resin to go off.
- Tack the other side of the tape down the same way - except that it will want
to lift off the surface because of the pull from rounding the curve.
- To keep it from lifting off, apply a layer of masking tape - which will adhere
to the cloth enough to hold it in place.
- Wait for the second tacking batch to go off.
- Now we have mostly un-wetted fiberglass tape following the curve by virtue of
the two tacking layers - albeit a little contaminated on it's surface by the
masking tape's adhesive.
- Then brush in the final coat of resin.
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Seems like the main question is whether or not the resin will wet the cloth and
bond sufficiently well in the areas that were tacked to the surface.
--
PeteCresswell
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