文档介绍：Foam Sandwich construction - Part 1
Thursday, 19 April 2007
Foam Sandwich for amateurs - Part one: Overview
How to build a foam posite boat
This file is an excerpt from the foam sandwich boat building instructions supplied with our plans.
The instructions supplied with the plans are more detailed and contain information specific to the boat.
For faster loading, we divided the smaller online version in several sections.
These notes will describe step by step how to build a boat in foam posite.
The notes below are not paring materials, we focus exclusively on building.
Appropriate foams for the methods we describe below are Divinycell, Klegecell, CoreCell and Airex
(2007). We will only use epoxy as resin: no polyester or vinylester.
Epoxies formulated for wooden boat building are not always adequate for foam sandwich.
Ideally, the builder should use a two phase resin. This means a resin that requires a post cure at a higher
temperature. Consult your designer about the correct type of epoxy.
Foam sandwich is a well proven material, light and strong. It is particularly well adapted to the building of
one-off hulls. It is well suited to amateur boat building because it does not require a female mold or any
special equipment.
We will describe what monly called the open mold method. Once you master the open mold
technique, you can graduate to vacuum bagged or infused hulls.
We will focus on the techniques specific to foam sandwich. Please refer to general boat building books for
details about building mon to all methods such as strongbacks set up, bulkheads alignment,
outfitting, etc.
Most books about boat building describe the techniques we use in great detail. We mend “The
Gougeon Brothers on Boat Construction”.
The techniques we show mon to all hull types, power or sail.
Overview of the hull building method:
We will create a foam hull shape around a wooden jig, fiberglass the outside, flip the hull, remove the jig
and fiberglas