Boat Building Forum

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Why scarf? It reduces your costs considerably
By:Paul G. Jacobson
Date: 10/1/2003, 11:57 pm
In Response To: Re: Why scarf? (sing)

: Guess I am not looking hard enough... I would prefer not to scarf.

: sing

Hmm.

I use short boards because theya re so easy to find, cheap to buy and easy to bring home. And then I scarf a few of them together to make longer boards which I then rip into strips. The rest of the boards I rip into shorter strips, which are perfectly fine.

A scarf is little more than a simple diagonal cut on the end of a piece of wood, which is then joined to another piece of wood with a simlar diagonal cut.

I stack two nominal 4-inch-wide boards so they overlap 24 inches and just draw a line diagonally through the overlap area. Then I cut this freehand with a circular saw -- cutting through both piees at the same time. When the short triangular waste pieces drop away I have two boards which have perfect matching cuts. Glue 'em, clamp 'em and let the glue harden before ripping perfect strips of any length I desire.

This gives me about a 6:1 scarf. If I wanted a 9 to one scarf I'd overlap the boards by 3 feet. With narrower boards I would use less of an overlap. Sometimes I buy 1x6 stock and rip it in half, then scarf the resulting 1x3's with a 2 foot overlap, giving about an 8:1 scarf. With epoxy for glue it works great.

While I usually use a circular saw for this cut I have in the past used a common crosscut handsaw, a bandsaw, and a sabresaw. In each case the scarf joint worked out just fine. It just takes longer to make a 24-inch-long cut with a handsaw, or a sabre saw, than with a circular saw. :) As for the bandsaw, I found it awkward to handle the boards on the small bandsaw table. If i was ripping my strips on the bandsaw I would have longer infeed and outfeed tables to support the work, and I think that would have made the attempt more stable.

The single diagonal cut is a breeze. You should try it with some inexpensive 1x3's -- which you should be able to pick up at most lumberyards for not much more than a dollar each. This will give you a bit of practice and certainly give you a sense of reassurance that the process is simple and effective.

PGJ

Messages In This Thread

Skin-on-Frame: Gunwales
Ronnie -- 9/30/2003, 2:00 pm
Re: Skin-on-Frame: Gunwales
Brian Nystrom -- 10/1/2003, 12:39 pm
Re: Skin-on-Frame: Gunwales
Ronnie -- 10/1/2003, 9:31 am
Re: Skin-on-Frame: Gunwales
sing -- 10/1/2003, 5:09 am
Why scarf?
Brian Nystrom -- 10/1/2003, 12:35 pm
Re: Why scarf?
sing -- 10/1/2003, 1:14 pm
Why scarf? It reduces your costs considerably
Paul G. Jacobson -- 10/1/2003, 11:57 pm
Apples and oranges
Brian Nystrom -- 10/2/2003, 12:32 pm
Apples, Oranges, Tutti Fruiti ? :)
Paul G. Jacobson -- 10/3/2003, 12:00 am
Re: Apples, Oranges, Tutti Fruiti ? :)
Brian Nystrom -- 10/3/2003, 3:40 pm
Thanks All For Scarfing Suggesitons.
sing -- 10/2/2003, 5:27 am
scarfing is not hard..
Frank Eberdt -- 10/1/2003, 2:10 pm
Re: Why scarf?
Erik -- 10/1/2003, 1:52 pm
Re: Why scarf?
Brian Nystrom -- 10/2/2003, 12:34 pm
Re: Why scarf?
Ketil Valle -- 10/2/2003, 2:20 am
Re: Skin-on-Frame: Gunwales (Redwood)
Tom Yost -- 10/1/2003, 9:30 am
Re: You do WHAT???
Scott Ferguson -- 10/1/2003, 1:29 pm
Re: You do WHAT??? *Pic*
Tom Yost -- 10/2/2003, 10:43 am
Re: You do WHAT??? *LINK*
Scott Ferguson -- 10/2/2003, 1:29 pm
Re: You do WHAT???
Tom Yost -- 10/2/2003, 6:49 pm
Re: Skin-on-Frame: Gunwales: My two cents worth
Rick Tatum -- 9/30/2003, 8:04 pm
Re: Redwood Should Work.... but..
Rehd -- 9/30/2003, 7:54 pm