tt

"toller"

21/07/2004 7:57 PM

Mixing wood (movement)

I am building a small chest out of bird's eye maple, and don't want to spend
that much on the back which will never be seen.

Presumably the best thing would be to use some plain maple, but I have
plenty of ash and oak scraps that I would like to use up. It will be about
10" crossgrain. Any serious problems with differential wood movement if I
mix maple and ash or oak? I have mixed wood on drawers, but not 10".

thanks


This topic has 4 replies

Gg

"George"

in reply to "toller" on 21/07/2004 7:57 PM

21/07/2004 5:19 PM

Look at your design to determine direction of movement and make your joinery
compensate for it. The key to backs and unders is that they generally fill
a void rather than act structurally. Makes a resaw of matching lumber a
good way to go. Just resaw some maple. The oak or ash would probably be
more visually grating than a piece of birch ply.

"toller" <[email protected]> wrote in message
news:[email protected]...
> I am building a small chest out of bird's eye maple, and don't want to
spend
> that much on the back which will never be seen.
>
> Presumably the best thing would be to use some plain maple, but I have
> plenty of ash and oak scraps that I would like to use up. It will be
about
> 10" crossgrain. Any serious problems with differential wood movement if I
> mix maple and ash or oak? I have mixed wood on drawers, but not 10".
>
> thanks
>
>

Gg

"George"

in reply to "toller" on 21/07/2004 7:57 PM

21/07/2004 5:50 PM

Frame/panel my choice. Will you really be satisfied with something made of
expensive wood, and then a chunk of mismatched whatever visible when you
open the chest?

You could dovetail the upper and lower pieces into the carcass.

"toller" <[email protected]> wrote in message
news:[email protected]...
>
> "George" <george@least> wrote in message
> news:[email protected]...
> > Look at your design to determine direction of movement and make your
> joinery
> > compensate for it. The key to backs and unders is that they generally
> fill
> > a void rather than act structurally. Makes a resaw of matching lumber a
> > good way to go. Just resaw some maple. The oak or ash would probably
be
> > more visually grating than a piece of birch ply.
> >
> I have some maple ply, but figured it would not expand like maple, so any
> real wood would be a better choice.
> The back is somewhat structural, as the lid will be hinged to it. I could
> secure it at the top and let the bottom float. I guess that would pretty
> much eliminate any problem, but would prefer to secure the bottom also.
>
>

AD

Andy Dingley

in reply to "toller" on 21/07/2004 7:57 PM

23/07/2004 1:17 AM

On Wed, 21 Jul 2004 19:57:26 GMT, "toller" <[email protected]> wrote:

>Any serious problems with differential wood movement if I
>mix maple and ash or oak?

No. Any minor problems you might have will be dwarfed by the usual
problems of mixing grain directions.

If you care, it's time to get a copy of Hoadley.

--
Smert' spamionam

tt

"toller"

in reply to "toller" on 21/07/2004 7:57 PM

21/07/2004 9:23 PM


"George" <george@least> wrote in message
news:[email protected]...
> Look at your design to determine direction of movement and make your
joinery
> compensate for it. The key to backs and unders is that they generally
fill
> a void rather than act structurally. Makes a resaw of matching lumber a
> good way to go. Just resaw some maple. The oak or ash would probably be
> more visually grating than a piece of birch ply.
>
I have some maple ply, but figured it would not expand like maple, so any
real wood would be a better choice.
The back is somewhat structural, as the lid will be hinged to it. I could
secure it at the top and let the bottom float. I guess that would pretty
much eliminate any problem, but would prefer to secure the bottom also.


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