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Re: About the glue laming..
By:Mike Savage
Date: 2/10/2012, 6:04 am
In Response To: Re: About the glue laming.. (ancient kayaker)

: Interesting. I'd never given it any thought until reading this
: thread. I compared some laminated and unlaminated pine using a
: spring balance and found no significant difference.

: Therefore the steamed wood must be weaker than either the laminated
: or solid wood. That could be due to the wood fibers collapsing
: on the inside of the bend, so they are easier to straighten
: again. I wonder if a a steamed frame is easier to straighten
: than to make it bend more sharply.

: Perhaps a laminated member can have a smaller cross-section than
: its steamed counterpart. Could be of interest to those who are
: passionate about light weight . . .

Hi,
Steam bent wood isn't necessarily weaker, done right, the fibres in the wood slide when the lignin is softened by the heat. When it cools, it locks the fibres to the shape to a greater degree. There is some spring-back though. This spring-back is a benefit in certain situations such as kayak ribs, with a chine impact it allows more flex than a laminated rib of similar dimensions.
For a rigid shape, laminated is better, for a degree of flex, steam bent is better.

Of course, for large dimensioned timbers laminated is necessary when such sized timber is unavailable. Also for extreme shapes or bends.
It's all about the application required.

Mike Savage
South West Cork

Messages In This Thread

Skin-on-Frame: First time builder
stefalo -- 1/22/2012, 1:06 am
Re: Skin-on-Frame: First time builder
Bill Hamm -- 1/22/2012, 3:07 am
Re: Skin-on-Frame: First time builder
Bill Hamm -- 1/22/2012, 3:08 am
Re: Skin-on-Frame: First time builder
stefalo -- 1/22/2012, 3:16 am
Re: Skin-on-Frame: First time builder
Bill Hamm -- 1/22/2012, 4:10 am
Re: Skin-on-Frame: First time builder
Ken Blanton -- 1/22/2012, 6:04 am
Re: Skin-on-Frame: First time builder
Matthias -- 1/22/2012, 7:14 am
Re: Skin-on-Frame: First time builder
Dave Gentry -- 1/22/2012, 7:54 am
Re: Skin-on-Frame: First time builder
Paul Montgomery -- 1/22/2012, 9:37 am
Re: Skin-on-Frame: First time builder
Brian Nystrom -- 1/22/2012, 12:55 pm
Re: Skin-on-Frame: First time builder
Paul Montgomery -- 1/22/2012, 8:02 pm
Re: Skin-on-Frame: First time builder
Ken Blanton -- 1/22/2012, 5:51 pm
Re: Skin-on-Frame: First time builder
Paul Montgomery -- 1/22/2012, 8:06 pm
About the glue laming..
David Bynoe -- 1/22/2012, 7:08 pm
Re: About the glue laming..
Jeff Soper -- 2/5/2012, 1:13 am
Re: About the glue laming..
stefalo -- 2/8/2012, 11:09 pm
Re: About the glue laming..
Mike Savage -- 2/9/2012, 4:00 am
Re: About the glue laming..
stefalo -- 2/9/2012, 12:18 am
Re: About the glue laming..
Jeff Soper -- 2/14/2012, 5:27 pm
Re: About the glue laming..
Bill Hamm -- 2/15/2012, 2:03 am
Re: About the glue laming..
Jeff Soper -- 2/20/2012, 9:50 pm
Re: About the glue laming..
Bill Hamm -- 2/26/2012, 3:47 am
Re: About the glue laming..
ancient kayaker -- 2/9/2012, 10:55 am
Re: About the glue laming..
Mike Savage -- 2/9/2012, 2:23 pm
Re: About the glue laming..
John Abercrombie -- 2/9/2012, 3:51 pm
Re: About the glue laming..
ancient kayaker -- 2/9/2012, 10:12 pm
Re: About the glue laming..
Mike Savage -- 2/10/2012, 6:04 am
Re: Skin-on-Frame: First time builder *PIC*
ancient kayaker -- 1/22/2012, 11:32 pm
Re: Skin-on-Frame: First time builder
Bill Hamm -- 1/23/2012, 2:06 am
Re: Skin-on-Frame: First time builder
Kent LeBoutillier -- 1/23/2012, 11:57 am
Re: Skin-on-Frame: First time builder
stefalo -- 1/23/2012, 5:39 pm
Re: Skin-on-Frame: First time builder
Ken Blanton -- 1/23/2012, 9:58 pm
Re: Skin-on-Frame: First time builder
Bill Hamm -- 1/24/2012, 2:35 am
Re: Skin-on-Frame: First time builder
ancient kayaker -- 1/24/2012, 12:21 am
Re: Skin-on-Frame: First time builder
Matthias -- 1/24/2012, 2:21 am
Re: Skin-on-Frame: First time builder
ancient kayaker -- 1/25/2012, 12:55 am
Re: Skin-on-Frame: First time builder
stefalo -- 1/25/2012, 6:07 pm
Re: Skin-on-Frame: First time builder
ancient kayaker -- 1/25/2012, 10:28 pm
Re: Skin-on-Frame: First time builder
Ken Blanton -- 1/24/2012, 4:58 pm