The C-Flex® Manual
-Permanent and Temporary Framework
-Traditional Wooden Framework
Cutting the "Planks"
Attaching the C-Flex to the Framework
Saturating the C-Flex®
Laying up over the C-Flex®
Fairing the Hull
1. Mechanical Properties-C-Flex® Fiberglass Planking
3. Polyester Resins
4. Fiberglass Reinforcements
5. Hull Framing Systems
6. Deck Construction
7. Special Procedures-Use of Milled Fiber Paste
8. General Reference Sources for GRP Boat builders
Because of the great adaptability of C-Flex®, there are many different approaches to
consider when determining a construction method for a C-Flex® project. In the
development of C-Flex®, Seemann Composites Inc. experimented with a broad range of
construction techniques, many of which are practical for our uses, and some that could
provide a good alternative for projects with a particular nature. The intention of this
manual is to give some insight into the different capabilities of C-Flex®, while limiting it
to a discussion of the basic approaches that are most suitable for a majority of
boatbuilding projects and the fundamental information that can direct a builder through
the fabrication of a C-Flex® structure.
Our objective is to reach the broadest possible spectrum of readers with this one book.
We have included technical information for the experienced designer, as well as
suggestions and outlines for the amateur. We have done our best to provide sketches and
photographs to illustrate the text, and we hope that both the professional and novice
reader alike will find the information presented here clear and concise.
This booklet is not intended to be a "complete boatbuilder’s manual." There are
countless sources that can be consulted for thorough and in d