[Searcher7]

When face-to-face gluing plywood to particle board does it help any to
use screws under any circumstances?

I'm not referring to an advantage during the drying process since I
have clamps. I'm talking about as a way to add strength to the bond
*after* the glue has set and dried.

Thanks.

Darren Harris
Staten Island, New York.

[Sonny]

I would suppose any attachment, that makes 2 separate pieces more of a single unit, would be a benefit. Also, though I wouldn't expect too much difference in the expansion and contraction of each of the 2 different plies, the maximum bonding of them into one unit would help eliminate the effects of any differing movements.

Sonny

[-MIKE-]

On 10/21/12 5:33 PM, Searcher7 wrote:
When face-to-face gluing plywood to particle board does it help any to
use screws under any circumstances?

I'm not referring to an advantage during the drying process since I
have clamps. I'm talking about as a way to add strength to the bond
*after* the glue has set and dried.

Thanks.

Darren Harris
Staten Island, New York.


One or the other. Once the glue dries, the screws are irrelevant.
The glue will be stronger than the screws.


--

-MIKE-

"Playing is not something I do at night, it's my function in life"
--Elvin Jones (1927-2004)
--
http://mikedrums.com

---remove "DOT" ^^^^ to reply

[[email protected]]

On Sun, 21 Oct 2012 17:59:46 -0500, -MIKE-
wrote:

On 10/21/12 5:33 PM, Searcher7 wrote:
When face-to-face gluing plywood to particle board does it help any to
use screws under any circumstances?

I'm not referring to an advantage during the drying process since I
have clamps. I'm talking about as a way to add strength to the bond
*after* the glue has set and dried.

Thanks.

Darren Harris
Staten Island, New York.


One or the other. Once the glue dries, the screws are irrelevant.
The glue will be stronger than the screws.
The screws will significantly add to the sheer strength of the joint
- and particularly the SHOCK syrength. Likely not required, but it
WILL add strength.

[-MIKE-]

On 10/21/12 6:49 PM, wrote:
On Sun, 21 Oct 2012 17:59:46 -0500, -MIKE-
wrote:

On 10/21/12 5:33 PM, Searcher7 wrote:
When face-to-face gluing plywood to particle board does it help any to
use screws under any circumstances?

I'm not referring to an advantage during the drying process since I
have clamps. I'm talking about as a way to add strength to the bond
*after* the glue has set and dried.

Thanks.

Darren Harris
Staten Island, New York.


One or the other. Once the glue dries, the screws are irrelevant.
The glue will be stronger than the screws.
The screws will significantly add to the sheer strength of the joint
- and particularly the SHOCK syrength. Likely not required, but it
WILL add strength.


Yeah, and biscuits, too. They would add shear and shock (wtf?) strength.
Likely not required but they WILL add strength.
And also steel dowels would add strength, especially for all that SHOCK.


--

-MIKE-

"Playing is not something I do at night, it's my function in life"
--Elvin Jones (1927-2004)
--
http://mikedrums.com

---remove "DOT" ^^^^ to reply

[[email protected]]

On Sun, 21 Oct 2012 22:02:31 -0500, -MIKE-
wrote:

On 10/21/12 6:49 PM, wrote:
On Sun, 21 Oct 2012 17:59:46 -0500, -MIKE-
wrote:

On 10/21/12 5:33 PM, Searcher7 wrote:
When face-to-face gluing plywood to particle board does it help any to
use screws under any circumstances?

I'm not referring to an advantage during the drying process since I
have clamps. I'm talking about as a way to add strength to the bond
*after* the glue has set and dried.

Thanks.

Darren Harris
Staten Island, New York.


One or the other. Once the glue dries, the screws are irrelevant.
The glue will be stronger than the screws.
The screws will significantly add to the sheer strength of the joint
- and particularly the SHOCK syrength. Likely not required, but it
WILL add strength.


Yeah, and biscuits, too. They would add shear and shock (wtf?) strength.
Likely not required but they WILL add strength.
And also steel dowels would add strength, especially for all that SHOCK.
It depends entirely on the application - and the glue. The OP did
not specify the glue - or the application.
Biscuits are not going to do much on a face to face joint - unless,
possibly, it is a relatively small joint on relatively large pieces.
The glue is (in almost all cases) stronger than the wood itself. Some
glues are very strong under steady force, but fragile under shock.
Some strong in tension, and weak in shear
And like I said, the screws would increase the strength of the joint -
but what good is it if the joint is stronger than the wood.

So -MIKE-, you don't have to get sarcastic, if that was your intent.

[-MIKE-]

On 10/21/12 10:34 PM, wrote:
On Sun, 21 Oct 2012 22:02:31 -0500, -MIKE-
wrote:

On 10/21/12 6:49 PM, wrote:
On Sun, 21 Oct 2012 17:59:46 -0500, -MIKE-
wrote:

On 10/21/12 5:33 PM, Searcher7 wrote:
When face-to-face gluing plywood to particle board does it help any to
use screws under any circumstances?

I'm not referring to an advantage during the drying process since I
have clamps. I'm talking about as a way to add strength to the bond
*after* the glue has set and dried.

Thanks.

Darren Harris
Staten Island, New York.


One or the other. Once the glue dries, the screws are irrelevant.
The glue will be stronger than the screws.
The screws will significantly add to the sheer strength of the joint
- and particularly the SHOCK syrength. Likely not required, but it
WILL add strength.


Yeah, and biscuits, too. They would add shear and shock (wtf?) strength.
Likely not required but they WILL add strength.
And also steel dowels would add strength, especially for all that SHOCK.
It depends entirely on the application - and the glue. The OP did
not specify the glue - or the application.
Biscuits are not going to do much on a face to face joint - unless,
possibly, it is a relatively small joint on relatively large pieces.
The glue is (in almost all cases) stronger than the wood itself. Some
glues are very strong under steady force, but fragile under shock.
Some strong in tension, and weak in shear
And like I said, the screws would increase the strength of the joint -
but what good is it if the joint is stronger than the wood.

So -MIKE-, you don't have to get sarcastic, if that was your intent.


That was my only intent. :-p


--

-MIKE-

"Playing is not something I do at night, it's my function in life"
--Elvin Jones (1927-2004)
--
http://mikedrums.com

---remove "DOT" ^^^^ to reply

[Searcher7]

On Oct 21, 11:34*pm, wrote:
On Sun, 21 Oct 2012 22:02:31 -0500, -MIKE-
wrote:









On 10/21/12 6:49 PM, wrote:
On Sun, 21 Oct 2012 17:59:46 -0500, -MIKE-
wrote:

On 10/21/12 5:33 PM, Searcher7 wrote:
When face-to-face gluing plywood to particle board does it help any to
use screws under any circumstances?

I'm not referring to an advantage during the drying process since I
have clamps. I'm talking about as a way to add strength to the bond
*after* the glue has set and dried.

Thanks.

Darren Harris
Staten Island, New York.

One or the other. *Once the glue dries, the screws are irrelevant.
The glue will be stronger than the screws.
* The screws will significantly add to the sheer strength of the joint
- and particularly the SHOCK syrength. *Likely not required, but it
WILL add strength.

Yeah, and biscuits, too. *They would add shear and shock (wtf?) strength.
Likely not required but they WILL add strength.
And also steel dowels would add strength, especially for all that SHOCK.

*It depends entirely on the application - and the glue. *The OP did
not specify the glue - or the application.
Biscuits are not going to do much on a face to face joint - unless,
possibly, it is a relatively small joint on relatively large pieces.
The glue is (in almost all cases) stronger than the wood itself. *Some
glues are very strong under steady force, but fragile under shock.
Some strong in tension, and weak in shear
And like I said, the screws would increase the strength of the joint -
but what good is it if the joint is stronger than the wood.

*So *-MIKE-, you don't have to get sarcastic, if that was your intent..

This is a repair arcade game cabinet project.I needed to cut off the
bottoms of the particle board sides and glued in replacement piece
made of plywood. I wanted to strengthen the edge-to-edge joint. so I'm
gluing in more plywood over the seam inside the cabinet and I was told
I should use screws.

http://i290.photobucket.com/albums/l...PositionII.jpg
http://i290.photobucket.com/albums/l...oject/PPLB.jpg
http://i290.photobucket.com/albums/l...ject/PPCut.jpg
http://i290.photobucket.com/albums/l...BottomSide.jpg

I'm about to countersink and screw from the outside through the
particle board and plywwood and into the plywood brace that is glued
over the inside seam.

Thanks.

Darren Harris
Staten Island, New York.

[[email protected]]

On Mon, 22 Oct 2012 08:19:45 -0700 (PDT), Searcher7
wrote:

On Oct 21, 11:34Â*pm, wrote:
On Sun, 21 Oct 2012 22:02:31 -0500, -MIKE-
wrote:









On 10/21/12 6:49 PM, wrote:
On Sun, 21 Oct 2012 17:59:46 -0500, -MIKE-
wrote:

On 10/21/12 5:33 PM, Searcher7 wrote:
When face-to-face gluing plywood to particle board does it help any to
use screws under any circumstances?

I'm not referring to an advantage during the drying process since I
have clamps. I'm talking about as a way to add strength to the bond
*after* the glue has set and dried.

Thanks.

Darren Harris
Staten Island, New York.

One or the other. Â*Once the glue dries, the screws are irrelevant.
The glue will be stronger than the screws.
Â* The screws will significantly add to the sheer strength of the joint
- and particularly the SHOCK syrength. Â*Likely not required, but it
WILL add strength.

Yeah, and biscuits, too. Â*They would add shear and shock (wtf?) strength.
Likely not required but they WILL add strength.
And also steel dowels would add strength, especially for all that SHOCK.

Â*It depends entirely on the application - and the glue. Â*The OP did
not specify the glue - or the application.
Biscuits are not going to do much on a face to face joint - unless,
possibly, it is a relatively small joint on relatively large pieces.
The glue is (in almost all cases) stronger than the wood itself. Â*Some
glues are very strong under steady force, but fragile under shock.
Some strong in tension, and weak in shear
And like I said, the screws would increase the strength of the joint -
but what good is it if the joint is stronger than the wood.

Â*So Â*-MIKE-, you don't have to get sarcastic, if that was your intent.

This is a repair arcade game cabinet project.I needed to cut off the
bottoms of the particle board sides and glued in replacement piece
made of plywood. I wanted to strengthen the edge-to-edge joint. so I'm
gluing in more plywood over the seam inside the cabinet and I was told
I should use screws.

http://i290.photobucket.com/albums/l...PositionII.jpg
http://i290.photobucket.com/albums/l...oject/PPLB.jpg
http://i290.photobucket.com/albums/l...ject/PPCut.jpg
http://i290.photobucket.com/albums/l...BottomSide.jpg

I'm about to countersink and screw from the outside through the
particle board and plywwood and into the plywood brace that is glued
over the inside seam.

Thanks.

Darren Harris
Staten Island, New York.
Personally, I'd go the other direction into the plywood so there are
no screw heads disturbing the outer finish to pop filler off of. Make
the inside box a tight fit into the outer box, and overlap a minimum
of 2 or 3 inches into the upper chip-board case. Even 6 inches would
not be excessive. 3/8" ply would be plenty for that application. Not
sure I'd even bother with screws in the ply-wood to plywood joint, but
on the old particle board I WOULD use screws - I'd put them in from
the inside, about 1/2 the thickness of the particle board, about evety
6 to 8 inches. There is not a lot of strength to the particle board
so the "pins" created by the screws will help hold it together so your
joint does not open up when you move it around the rec room.

[Larry Jaques[_4_]]

On Mon, 22 Oct 2012 08:19:45 -0700 (PDT), Searcher7
wrote:

This is a repair arcade game cabinet project.I needed to cut off the
bottoms of the particle board sides and glued in replacement piece
made of plywood. I wanted to strengthen the edge-to-edge joint. so I'm
gluing in more plywood over the seam inside the cabinet and I was told
I should use screws.

http://i290.photobucket.com/albums/l...PositionII.jpg
http://i290.photobucket.com/albums/l...oject/PPLB.jpg
http://i290.photobucket.com/albums/l...ject/PPCut.jpg
http://i290.photobucket.com/albums/l...BottomSide.jpg

I'm about to countersink and screw from the outside through the
particle board and plywwood and into the plywood brace that is glued
over the inside seam.

Go for it.

I'd probably glue and screw, bondo, sand, prime, and paint.

--
They must find it difficult,
those who have taken authority as truth,
rather than truth as authority.
-- Gerald Massey, Egyptologist