I'm guessing you mean scribing a template off the hull so that the
outboard edge of a panel will with up against the hull.

There are drawings showing the process in Robert Steward's
Boatbuilding Manual, but maybe this will do:

Take a flat plank of suitable length and width to capture the length
and shape you need. Hold it up against the hull, vertical in the fore
and aft plane and perpendicular to the center line (that is, square to
the boat in two planes and tilted as required p&s). Set dividers or a
compass (good quality that are big enough for the job and won't move
while you're doing it) to a convenient width, hold them so the two
ends are level and run down the hull while scratching or drawing a
line on the plank. The line matches the hull shape at that point.

Variation:
-- The plank on which you scribe can be the actual material of the
bulkhead or scrap or you can use heavy cardboard, but it's a little
harder to keep cardboard straight and flat.
-- You don't have to hold the dividers level, and angle will do as
long as it's constant -- level is usually easiest.
-- You can use a block of wood instead of the dividers. Hold a pencil
at one end just peeking out past the block.
-- It doesn't need to be perfect. If you're glassing in a new
bulkhead, you're going to put a foam strip between the end of the
bulkhead and the hull to prevent a hard spot in the structure, then
glass to both sides which distributes the load.

For more complicated shapes there's another technique, but I'm not
sure I'm up to describing that without pictures.


Jim Woodward
www.mvFintry.com


"Ytter" wrote in message ...
Does anyone know where to find good instructions,how to make templates for
boat interior renovation?
THANKS,Ytter