Re: [bolger] Does wood forgive torture?
Roger,
It doesn't take wood very long to adjust to the shape you bend it into and
stay there. A couple days of twist in the tunnel panels of my Tolman
Seabright Skiff was enough to make those 3/8 inch panels remain halfway
twisted. After a month or two I would expect negligible springback, and
after 20 years I'm sure there won't be any springback at all.
Sincerely,
Ken Grome
Bagacay Boatworks
www.bagacayboatworks.com
It doesn't take wood very long to adjust to the shape you bend it into and
stay there. A couple days of twist in the tunnel panels of my Tolman
Seabright Skiff was enough to make those 3/8 inch panels remain halfway
twisted. After a month or two I would expect negligible springback, and
after 20 years I'm sure there won't be any springback at all.
Sincerely,
Ken Grome
Bagacay Boatworks
www.bagacayboatworks.com
> Twenty years from now when I take a chain saw to the hull, will the wooden
> parts hold the shape that they have been forced into, or will they spring
> back to the conic sections they really wanted to be in the first place?
If you fiberglassed both sides, or just the concave side it will not
spring back much at all. Otherwise, it depends on how long it has
been tortured for. The wood cells tend to realign over time.
spring back much at all. Otherwise, it depends on how long it has
been tortured for. The wood cells tend to realign over time.
--- Inbolger@yahoogroups.com, "derbyrm" <derbyrm@...> wrote:
>
> My ham-handed techniques have built some stresses into the hull.
We're
> talking BS-1088 plywood, 3/8", well encapsulated with epoxy and
glassed over
> some of the surfaces.
>
> Twenty years from now when I take a chain saw to the hull, will the
wooden
> parts hold the shape that they have been forced into, or will they
spring
> back to the conic sections they really wanted to be in the first
place?
>
> (More practically, do the built-in stresses add to those generated
by rocks,
> driftwood and clumsy handling?)
>
> Roger
> derbyrm@...
>http://home.insightbb.com/~derbyrm
>
My guess would be that they will spring to something between their
original shape and the tortured shape and the degree of spring back
will be afffected by various things such as the thickness of the
glass, the moisture content of the wood and the degree of "torture"
applied to force the wood into the hull shape.
Being a natural smartass, my initial response was "probably, but
you'll have to say you're sorry and by it flowers."
Paul H.
original shape and the tortured shape and the degree of spring back
will be afffected by various things such as the thickness of the
glass, the moisture content of the wood and the degree of "torture"
applied to force the wood into the hull shape.
Being a natural smartass, my initial response was "probably, but
you'll have to say you're sorry and by it flowers."
Paul H.
--- Inbolger@yahoogroups.com, "derbyrm" <derbyrm@...> wrote:
>
> My ham-handed techniques have built some stresses into the hull.
We're
> talking BS-1088 plywood, 3/8", well encapsulated with epoxy and
glassed over
> some of the surfaces.
>
> Twenty years from now when I take a chain saw to the hull, will
the wooden
> parts hold the shape that they have been forced into, or will they
spring
> back to the conic sections they really wanted to be in the first
place?
>
> (More practically, do the built-in stresses add to those generated
by rocks,
> driftwood and clumsy handling?)
>
> Roger
> derbyrm@...
>http://home.insightbb.com/~derbyrm
>
My ham-handed techniques have built some stresses into the hull. We're
talking BS-1088 plywood, 3/8", well encapsulated with epoxy and glassed over
some of the surfaces.
Twenty years from now when I take a chain saw to the hull, will the wooden
parts hold the shape that they have been forced into, or will they spring
back to the conic sections they really wanted to be in the first place?
(More practically, do the built-in stresses add to those generated by rocks,
driftwood and clumsy handling?)
Roger
derbyrm@...
http://home.insightbb.com/~derbyrm
talking BS-1088 plywood, 3/8", well encapsulated with epoxy and glassed over
some of the surfaces.
Twenty years from now when I take a chain saw to the hull, will the wooden
parts hold the shape that they have been forced into, or will they spring
back to the conic sections they really wanted to be in the first place?
(More practically, do the built-in stresses add to those generated by rocks,
driftwood and clumsy handling?)
Roger
derbyrm@...
http://home.insightbb.com/~derbyrm