"carlp" ) writes:

use of polyester for
the bulk of construction

could you be a little more specific?

.. and epoxy to seal the polyester

for an effective moisture seal 3 layers of epoxy are recommended.
epoxy does not flow like paint or varnish to leave a smooth finish.


, say a 85 gm.glass
woven cloth impregnated with epoxy .
Only the cost saving would be large, considering the difference in the price
of the two resins.
I have started on the frames of a 23 ft. WL. sailboat, strong back is in
place.
cheers
Carl.




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