Pn

Phisherman

19/07/2007 3:23 PM

How to make make a 12-foot piece of ply?

I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
possible to make a 12-foot piece? I have most common tools.


This topic has 17 replies

LH

"Lowell Holmes"

in reply to Phisherman on 19/07/2007 3:23 PM

20/07/2007 4:35 PM


"Phisherman" <[email protected]> wrote in message
news:[email protected]...
>I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
> 8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
> possible to make a 12-foot piece? I have most common tools.

I think I remember that 6:1 or some ration like that works. Make a ramped
jig that allows you to use a router.

Try these links.

http://www.boat-links.com/Scarfing.html

http://oneoceankayaks.com/stitchglue/plyshophtm/scarfjig2.htm

http://buildyourguitar.com/resources/tips/scarfjnt.htm

http://www.naese.com/scarfing.htm

Rr

RicodJour

in reply to Phisherman on 19/07/2007 3:23 PM

19/07/2007 8:16 PM

On Jul 19, 10:52 pm, "Edwin Pawlowski" <[email protected]> wrote:
> "Ron Magen" <[email protected]> wrote in message
>
> > Phish . . .
>
> > Do you know how to make a SCARF ?
>
> You want him to knit the plywood?

Darn right.

R

Dt

DerbyDad03

in reply to Phisherman on 19/07/2007 3:23 PM

21/07/2007 9:51 PM

On Jul 21, 7:35 pm, Phisherman <[email protected]> wrote:
> On Thu, 19 Jul 2007 15:23:11 GMT, Phisherman <[email protected]> wrote:
> >I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
> >8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
> >possible to make a 12-foot piece? I have most common tools.
>
> Thanks for all the replies. This is for a shelf inside a 12-foot
> valance I'm making. I found some good info on scarfing ply which is
> often used in boat building. After some thought, I decided to make
> the shelf out of solid pine (1/2" thick) and attach it to the valance
> sides using a split tenon with 1/16" space allowance in the mortises
> for seasonal changes. With requests, I'll post some pictures in the
> pictures group.

-- After some thought, I decided to make the shelf out of solid pine
(1/2" thick)

Hollow pine would be lighter.

Bb

BillinDetroit

in reply to Phisherman on 19/07/2007 3:23 PM

22/07/2007 2:01 PM

DerbyDad03 wrote:

> -- After some thought, I decided to make the shelf out of solid pine
> (1/2" thick)
>
> Hollow pine would be lighter.
>

It's tough to cut the pine so that it follows the hollow heart and still
ends up straight. Usually have to steam bent afterwards and plug at
least one end.

Better just to get a balsa plank and skin it with 3/8 pine for a
lightweight torsion box.

;-)

Bill
--
I'm not not at the above address.
http://nmwoodworks.com


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EP

"Edwin Pawlowski"

in reply to Phisherman on 19/07/2007 3:23 PM

20/07/2007 2:52 AM


"Ron Magen" <[email protected]> wrote in message
news:juLni.4441$SM6.248@trnddc01...
> Phish . . .
>
> Do you know how to make a SCARF ?
>

You want him to knit the plywood?

MD

"Morris Dovey"

in reply to Phisherman on 19/07/2007 3:23 PM

19/07/2007 11:09 AM

Phisherman wrote:
| I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only
| carry 8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply.
| Is it possible to make a 12-foot piece? I have most common tools.

I've spliced 3/4" Extira to make 12-foot sheets - and would guess than
the same method would work for ply. I routed a pair of 1/3-thickness
steps 3" wide on the edges to be mated and joined with epoxy - with
full-width clamping. You can see the clamping lash-up in the top two
photos at the link in my sig.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/PT_Sign.html

c

in reply to Phisherman on 19/07/2007 3:23 PM

19/07/2007 4:37 PM

On Thu, 19 Jul 2007 15:23:11 GMT, Phisherman <[email protected]> wrote:

>I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
>8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
>possible to make a 12-foot piece? I have most common tools.



Or you could buy 1/8 stuff, cut out extra bits from 3-4 sheets and
do a glue up to make a larger piece using staggered joints. Getting
a press to clamp it together might be an issue.

Pete :)

JJ

in reply to Phisherman on 19/07/2007 3:23 PM

21/07/2007 12:58 PM

Thu, Jul 19, 2007, 3:23pm (EDT+4) [email protected] (Phisherman) doth
claimeth:
I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
8-foot ply stock. =A0 Already I have a 4x8' sheet of 3/8" ply. =A0 Is it
possible to make a 12-foot piece? I have most common tools.

If you don't have some uncommon tools, you can't do it.

Get about a 14 foot log. Mount it on a lathe, shave off a thin
roll. Cut strips from the roll about 14 inches wide the long way,
shorter pieces for crosswise. Put together, with glue, apply a lot of
pressure. When the glue is dry, trim. No prob. Any other questions?

Or, you could do it in any number of simpler ways' but, since you
didn't say what you want it for, I'm not telling.



JOAT
I do things I don't know how to do, so that I might learn how to do
them.
- Picasso

LH

Lew Hodgett

in reply to Phisherman on 19/07/2007 3:23 PM

19/07/2007 3:28 PM

Phisherman wrote:

> I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
> 8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
> possible to make a 12-foot piece? I have most common tools.

There are lots of ways depending on what you are trying to accomplish.

Can you tolerate a seam?

Are you trying to bend the finished piece?

What is the application?

Lew

sD

[email protected] (Doug Miller)

in reply to Phisherman on 19/07/2007 3:23 PM

19/07/2007 8:27 PM

In article <[email protected]>, Patriarch <[email protected]> wrote:
>Phisherman <[email protected]> wrote in
>news:[email protected]:
>
>> I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
>> 8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
>> possible to make a 12-foot piece? I have most common tools.
>
>Strange. The plywood dealer I use has 12' stock. Maybe not in rift-sawn
>Appalachian Cherry veneer, but in a number of very useful grades and types.
>
>Check with another dealer, one who sells to a lot of cabinet chops. Maybe
>you'll have better luck.

Or check with local cabinet shops -- since he only needs an 8.5-inch strip,
it's barely possible there might be an offcut available. Doesn't seem real
practical to buy an entire 12' sheet for one strip.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.

sD

[email protected] (Doug Miller)

in reply to Phisherman on 19/07/2007 3:23 PM

20/07/2007 11:49 AM

In article <[email protected]>, "Edwin Pawlowski" <[email protected]> wrote:
>
>"Ron Magen" <[email protected]> wrote in message
>news:juLni.4441$SM6.248@trnddc01...
>> Phish . . .
>>
>> Do you know how to make a SCARF ?
>>
>
>You want him to knit the plywood?
>
Dammit, Ed, you owe me a new keyboard.

I know enough to swallow the coffee before opening any of Buddy Matlosz's
posts, but you caught me unawares.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.

Pg

Patriarch

in reply to Phisherman on 19/07/2007 3:23 PM

19/07/2007 2:49 PM

Phisherman <[email protected]> wrote in
news:[email protected]:

> I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
> 8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
> possible to make a 12-foot piece? I have most common tools.

Strange. The plywood dealer I use has 12' stock. Maybe not in rift-sawn
Appalachian Cherry veneer, but in a number of very useful grades and types.

Check with another dealer, one who sells to a lot of cabinet chops. Maybe
you'll have better luck.

Patriarch

lL

[email protected] (Larry W)

in reply to Phisherman on 19/07/2007 3:23 PM

20/07/2007 4:02 PM

In article <[email protected]>,
Phisherman <[email protected]> wrote:
>I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
>8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
>possible to make a 12-foot piece? I have most common tools.

Google for "scarf joint" and a jig for the same. There are a few ways
of cutting this. One of the easist & most common uses a jig and a hand held
power planer. I've seen different figures for the strenght of this joint
and it varies with the angle of the scarf, but it is strong enough
to be the standard method of making longer plywood panels for boat
building.


--
Make it as simple as possible, but no simpler.

Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar. org

RM

"Ron Magen"

in reply to Phisherman on 19/07/2007 3:23 PM

19/07/2007 3:32 PM

Phish . . .

Do you know how to make a SCARF ?

Another sheet, some care & attention, a few minutes with a plane, a
relatively flat place, a few brads, some GOOD glue, a bit of plastic wrap,
some clamps & scrap '2x's . . . and Bob's Your Uncle.

Regards & Good Luck,
Ron Magen
Backyard Boatshop
{PS - if you are unfamiliar with the word or process - drop me a line and
I'll give detailed info}

"Phisherman" <[email protected]> wrote in message
news:[email protected]...
> I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
> 8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
> possible to make a 12-foot piece? I have most common tools.

Pn

Phisherman

in reply to Phisherman on 19/07/2007 3:23 PM

21/07/2007 11:35 PM

On Thu, 19 Jul 2007 15:23:11 GMT, Phisherman <[email protected]> wrote:

>I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
>8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
>possible to make a 12-foot piece? I have most common tools.


Thanks for all the replies. This is for a shelf inside a 12-foot
valance I'm making. I found some good info on scarfing ply which is
often used in boat building. After some thought, I decided to make
the shelf out of solid pine (1/2" thick) and attach it to the valance
sides using a split tenon with 1/16" space allowance in the mortises
for seasonal changes. With requests, I'll post some pictures in the
pictures group.

RS

Roy Smith

in reply to Phisherman on 19/07/2007 3:23 PM

21/07/2007 1:13 PM

In article <[email protected]>,
Phisherman <[email protected]> wrote:

> I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
> 8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
> possible to make a 12-foot piece? I have most common tools.

http://www.eagleplywood.com/ says they make up to 5' x 12' panels (and
they're not the only one). Any good lumber yard (i.e. not Home Depot)
should be able to locate and order some for you. You might pay a premium
for it.

FB

Frank Boettcher

in reply to Phisherman on 19/07/2007 3:23 PM

20/07/2007 10:44 AM

On Thu, 19 Jul 2007 15:23:11 GMT, Phisherman <[email protected]> wrote:

>I need a 12-foot by 8.5" piece of 3/8" ply. The box stores only carry
>8-foot ply stock. Already I have a 4x8' sheet of 3/8" ply. Is it
>possible to make a 12-foot piece? I have most common tools.


DAGS "stitch and glue" process

Frank


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