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Re: Strip: Butt joint issues?
By:Fred Gasper
Date: 12/30/2010, 7:57 am
In Response To: Strip: Butt joint issues? (Darel)

In the 2 strip canoes I built, I used butt joints between the forms. No problem with fairness where I used bead and cove and immediately placed a strip (could be temporary) across the forms adjacent to the butt joint to hold the strip fair. I always tried to end the day of stripping with a full length strip.

: Hi all,

: After 3 months of work I'm finally laying my first strips on a Fire
: Star.

: I quite literally found it impossible to find full-length lumber.
: Local, internet, you name it. There was one possibility that
: would have doubled the cost of the project.

: So, I decided to scarf boards together as suggested in Rob's plans.
: Built the jig, and also built a clamp jig to hold them square
: and tight while drying. Did a couple boards at an 8:1 scarf.
: Glued them up with TB III and let them dry for a week.

: As soon as I picked them up they broke at the joints. All of them.
: The one that didn't break, when I ran it through the table sw
: each individual strip broke as it came off.

: After much searching, I figured butt joints would have to do. To my
: (admittedly faulted) logic, the end result is the same product.

: Sidebar: when I design and build things there are always
: compromises. As a matter of habit I generally try to turn my
: compromises into "design elements".

: One idea I had for a design element would involve lining up all of
: my butt joints in a line from shear down about 4". My
: (admittedly faulted) logic tells me this is not a good idea for
: structural reasons. A little voice also tells me that most of my
: strength comes from glass.

: Question #1: Will lining up these butt joints create a weak
: "seam" in the finished kayak? Like, will it break in
: half when I pick it up? Strap it to a car?

: I laid my sheer line to see what it looked like. I like it. What I
: did was cut several 2" pieces of strip and (permanently)
: glued them to the back of the butt joint. I can either sand
: these off or leave them in place and glass over them. Question
: #2: Thoughts? Leave in place? Sand off? Will they actually do
: anything to reinforce the joint? I rounded off the corners so
: they look like little pills and I think I could live with them
: in the finished boat if they do actually do anything.

: Like I said the line of butt joints will be from the sheer line
: about 4" down. There will be hardwood pinstripes running
: between the butt-jointed strips. No more than 3 butt joints will
: be lined up without a hardwood pinstripe between them. Does this
: help any?

: Anyone have any thoughts? Bill, I know you have no issues with butt
: joints. Rob, it's your kayak and I know you DO have a problem
: with butt joints. Anyone feel like chiming in? I don't want to
: do anything that will compromise the integirty of my kayak.

: Thank you,
: Darel

Messages In This Thread

Strip: Butt joint issues?
Darel -- 12/28/2010, 10:03 pm
joints of many kinds *PIC*
Paul G. Jacobson -- 1/2/2011, 12:02 pm
Re: Strip: Butt joint issues?
Fred Gasper -- 12/30/2010, 7:57 am
Re: Strip: Butt joint issues?
Paul G. Jacobson -- 12/30/2010, 11:54 am
Re: Strip: Butt joint issues?
G New -- 12/29/2010, 8:07 pm
Re: Strip: Butt joint issues?
Eric -- 12/29/2010, 7:14 pm
Re: Strip: Butt joint issues?
Rob Macks / Laughing Loon CC&K -- 12/29/2010, 2:16 pm
Re: Strip: Butt joint issues?
Dean -- 12/29/2010, 12:40 pm
Re: Strip: Butt joint issues?
Joy -- 12/29/2010, 9:43 am
Butt joints NOT over forms are bad
Paul G. Jacobson -- 12/29/2010, 1:43 pm
Re: Butt joints NOT over forms are bad
Al Edie -- 12/30/2010, 12:06 pm
Re: Butt joints NOT over forms are bad
Bill Hamm -- 12/30/2010, 1:48 pm
Re: Butt joints NOT over forms are bad
Bill Hamm -- 12/29/2010, 3:02 pm
Re: Strip: Butt joint issues?
Randy Echtinaw -- 12/29/2010, 10:56 am
Re: Strip: Butt joint issues? *PIC*
Joy -- 12/29/2010, 10:09 am
Re: Strip: Butt joint issues?
Bill Hamm -- 12/29/2010, 8:28 am
Butt joint boards or strips? *PIC*
Jay Babina -- 12/29/2010, 8:19 am
Re: Butt joint boards or strips?
Bill Hamm -- 12/29/2010, 8:30 am
Re: Strip: Butt joint issues?
Bill Hamm -- 12/29/2010, 8:07 am
Re: Strip: Butt joint issues?
Les Cheeseman -- 12/29/2010, 5:03 am
Re: Strip: Butt joint issues?
Randy Echtinaw -- 12/29/2010, 7:00 am
Re: Strip: Butt joint issues?
Darel -- 12/29/2010, 5:36 am
Still got that bottle of glue?
Paul G. Jacobson -- 12/31/2010, 7:22 am
Re: Still got that bottle of glue?
Darel -- 12/31/2010, 11:31 am
buy new glue
Paul G. Jacobson -- 12/29/2010, 4:27 am
Re: Strip: Butt joint issues?
Dave Houser -- 12/29/2010, 12:46 am
Re: Strip: Butt joint issues?
JohnK -- 12/29/2010, 2:23 am
Re: Strip: Butt joint issues?
Charlie -- 12/28/2010, 11:20 pm
Re: Strip: Butt joint issues?
Bill Hamm -- 12/29/2010, 8:16 am
Re: Strip: Butt joint issues?
Allan -- 12/28/2010, 10:36 pm
Re: Strip: Butt joint issues?
Stephen Troy -- 12/28/2010, 10:13 pm
Re: Strip: Butt joint issues? *NM* *PIC*
Darel -- 12/29/2010, 12:43 am
Re: Strip: Butt joint issues?
Bill Hamm -- 12/29/2010, 8:33 am
Re: Strip: Butt joint issues?
mark j -- 12/28/2010, 11:19 pm
Re: Strip: Butt joint issues?
Darel -- 12/28/2010, 10:22 pm