Building a plug and mold is not worth the effort and cost unless you are
planning to go into production. The plug itself can be built with
relatively cheap material but it must be faired and polished with expensive
tooling resins and a lot of labor. The materials for the mold will cost a
lot more than a final hull. It has to be built with tooling resins and
heavily braced to keep it from warping. Then it will require a lot of prep
work before you can use it. In the end you will have the equivalent of 3
hulls invested in material and labor before you can start producing the
first real hull.

The best way to build two identical boats would be to make the station molds
out of a durable material (plywood rather than particle board) and reuse
them for the second boat.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

"Jens" wrote in message
k...
Hi everyone,

I am thinking about building a sailing boat in GRP, actually I want to
build two identical boats. I want to build it like the pros, i.e.
plug - mold - hulls

Does anyone know of good webpages where i can find information on building
a plug i.e. work process, materials etc. ?

Best regards

jlindberg