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Re: S&G: Symetrical form
By:Erez
Date: 3/31/2002, 6:29 pm
In Response To: S&G: Symetrical form (Barry Adams)

hello Barry,

I am also not confident that everything will be wonderful when you put on the deck.

I recommend you make some more forms that will support the hull from the outside.
If I remember correctly, the stitched hull stands upside down on 3 "inner" forms, & there are 2 more little forms, one for the bow & one for the stern.
I recommend that you make another "outer" form for each of the 3 inner forms
that the hull is supported on, & add more inner & outer forms wherever you think it's necessary, & align them with the original 3 forms.

I think the 3 supportive forms are not enough to eliminate any twist in the hull.

I used the "broomstick alignment method" to align the 3 forms of my Coho, & you can do the same for any number of forms.

(btw, can anybody show me that excellent drawing that explains how to align a hull with broomsticks layed across the hull. thx.)

I also recommend that you don't wait too long before sealing the hull & deck
because there is a chance they get a twist due to absorbing humidity on one side
while the other side is already sealed. I would say a week or so, but not more.

I am a great fan of industrial dumpsters. I would climb into one near a carpentry to get the extra plywood.

good luck.

build less paddle more,

Erez

: I have just finished stitching together a Coho and I am not pleased with the
: shape (symmetry) from the last form to the stern. It looks lopsided, but
: the keel line appears to be straight, with most of the deformation
: occuring at the top (4th panel). I believe that once I attach the deck, it
: will pull into shape, but I am not overly confident due to the strength
: the mishapen area will gain when glassed. Any ideas or suggestions to
: eliminate the problem?

Messages In This Thread

S&G: Symetrical form
Barry Adams -- 3/31/2002, 3:10 pm
Re: S&G: Symetrical form
mike allen ---> -- 4/2/2002, 8:49 pm
Re: S&G: Symetrical form
jim kozel -- 4/1/2002, 7:11 am
Re: S&G: Symetrical form
LeeG -- 4/1/2002, 12:43 am
Re: S&G: Symetrical form
Erez -- 3/31/2002, 6:29 pm
Re: S&G: Symetrical form *Pic*
Mike Hanks -- 3/31/2002, 11:21 pm