Gluing multiple layers of plywood at an angle - Woodworking Talk - Woodworkers Forum
 
Thread Tools Display Modes
post #1 of 8 Old 03-10-2016, 12:30 AM Thread Starter
Junior Member
 
Join Date: Mar 2016
Posts: 1
View FallonMolly52's Photo Album My Photos
Gluing multiple layers of plywood at an angle

I am gluing several layers of plywood together with a 20 degree edge angle. My issue is the pieces of wood sliding while clamped. My only thought to remedy this is to construct a "chute" or box that applies restriction on four sides while using a pipe clamp to compress the boards together from either end. I know this is a little peculiar to understand without pictures so please respond with your suggestions.
FallonMolly52 is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 03-10-2016, 04:09 AM
Senior Member
 
Danno's Avatar
 
Join Date: Apr 2009
Location: Ajax, Ontario, Canada
Posts: 527
View Danno's Photo Album My Photos
Is it visible on both sides? Could you pin it together from the back before clamping?
Danno is offline  
post #3 of 8 Old 03-10-2016, 05:08 AM
Village Idiot
 
epicfail48's Avatar
 
Join Date: Mar 2014
Location: Springfield MO
Posts: 4,817
View epicfail48's Photo Album My Photos
epicfail48 is offline  
Sponsored Links
Advertisement
 
post #4 of 8 Old 03-10-2016, 08:42 AM
Senior Member
 
Join Date: Sep 2011
Posts: 25,995
View Steve Neul's Photo Album My Photos
If it were me I would nail it and forget the clamps. Not using nails you might use biscuits or a spline in the joints to help hold them in place.
Steve Neul is offline  
post #5 of 8 Old 03-10-2016, 09:29 AM
Senior Member
 
Join Date: Jan 2007
Location: N. Strabane PA (South of Pittsburgh)
Posts: 266
View regesullivan's Photo Album My Photos
If nailing or pinning is not an option sprinkle a small pinch of sand or any hard grit after spreading the glue. It will help keep it from sliding while clamping.
regesullivan is offline  
post #6 of 8 Old 03-10-2016, 10:05 AM
where's my table saw?
 
woodnthings's Avatar
 
Join Date: Jan 2009
Location: SE, Michigan
Posts: 26,387
View woodnthings's Photo Album My Photos
Question?

Quote:
Originally Posted by FallonMolly52 View Post
I am gluing several layers of plywood together with a 20 degree edge angle. My issue is the pieces of wood sliding while clamped. My only thought to remedy this is to construct a "chute" or box that applies restriction on four sides while using a pipe clamp to compress the boards together from either end. I know this is a little peculiar to understand without pictures so please respond with your suggestions.
Without a photo it is a bit difficult to understand exactly what you are attempting.... however if the edges run lengthwise, like a bevel, it is more tricky. If the edges are along the width like a miter, it will be easier..

The bevel is what I suspect you are doing since you mentioned a "chute" to constrain the pieces. That sounds like a lot of work and for a one time only may not be worth it... I donno?

If you can glue them vertically, make a 20 degree wedge and fasten it to the bench. Make another wedge with an additional block and use it to maintain the angle on the other end. Now you have access to both sides of the joint IF you want to drive a pin nail to restrain them. Additionally you can hot glue some gluing blocks at several places to get back to a parallel condition for a clamp or two.

OR you can make small wedge blocks like these:


A similar idea:

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
woodnthings is offline  
post #7 of 8 Old 03-10-2016, 10:45 AM
Senior Member
 
Join Date: Sep 2011
Posts: 25,995
View Steve Neul's Photo Album My Photos
It's a funny thing about clamping miters. A lot of folks think it takes a lot of pressure to make the joint stay. You're are only going to get so much strength from an end grain joint unless you put some kind of spline in the joint. With just a butt joint it only takes contact. Somewhere in North Carolina there is an airport terminal with decorative columns which the mitered joints were clamped together with masking tape. This is how the company I worked for assembled them. They were fabricated in the Dallas area and shipped there and installed.
Steve Neul is offline  
post #8 of 8 Old 03-10-2016, 11:52 AM
Senior Member
 
Join Date: Jan 2010
Location: NW Pa
Posts: 2,927
View TimPa's Photo Album My Photos
sometimes clamping can be better done by cutting the pieces oversized, then nailing, screwing, clamping in the waste area can be accomplished.
TimPa is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Woodworking Talk - Woodworkers Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Sealing plywood joins/gaps in a plywood sided shed gak1952 Design & Plans 8 12-17-2015 07:13 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome