Stem Springback off the form after Lamination

Welcome to the new Bear Mountain Builders Forum - an interactive internet service we provide to encourage communication between canoe and kayak builders
Post Reply
Niko03
Posts: 9
Joined: Sat May 23, 2015 1:07 pm
Location: Milwaukee, WI

Stem Springback off the form after Lamination

Post by Niko03 »

Hi All,

Just getting into the fun stuff now on my 16' Bob's Special build.

I steamed the stems Sunday and used white ash for the inside and outside stems.
Last night I epoxy laminated the first set of Stems, and finally took off the clamps a few minutes ago.
I was surprised to see they still spring back a bit, maybe 1/2" to 3/4" up off the sheer line portion of the form, if I hold the end down on the keel line end of the station form. Definitely way way less then non glued, but...

Is this normal?
Will it cause problems?

I'm amazed at how stiff it is, it will bend back with some pressure, but don't know if this will cause a problem when stripping.
Or will clamping, as you do, and then the combined holding power of all the strips keep it in check?

Thanks and appreciate any insight.
sedges
Posts: 325
Joined: Fri Jul 09, 2004 5:37 pm
Location: georgia

Re: Stem Springback off the form after Lamination

Post by sedges »

Not unusual. Clamp it in place and remove clamps as you need room for strips. The strips will hold it to shape.
User avatar
Cruiser
Posts: 867
Joined: Sat Apr 27, 2013 10:21 am
Location: Bowmanville, Ontario

Re: Stem Springback off the form after Lamination

Post by Cruiser »

Up to 30% springback isn't unusual for steam bent wood. Once it gets glued up that is no longer be an issue, it will take the shape of the mold and hold.


Brian
Niko03
Posts: 9
Joined: Sat May 23, 2015 1:07 pm
Location: Milwaukee, WI

Re: Stem Springback off the form after Lamination

Post by Niko03 »

Thanks All, appreciate, good to know it will be cool.
Post Reply