Reinforced 3-way Miter Joint - Woodworking Talk - Woodworkers Forum
 
Thread Tools Display Modes
post #1 of 8 Old 10-12-2012, 02:32 PM Thread Starter
Jeff G
 
Join Date: Nov 2010
Location: Pittsburgh, PA
Posts: 189
View buktotruth's Photo Album My Photos
Reinforced 3-way Miter Joint

Hi everyone,

I'm looking to make a simple box that has plexiglass walls. I was thinking of doing this with 3-way miter joints all around the box, but I'm not sure they'll be strong enough (given the end grain joint). Any thoughts on either a) how to reinforce them or b) an alternative build suggestion?

Below is a quick sketchup version of what I'm thinking for the corners
Attached Thumbnails
Click image for larger version

Name:	3-way miter 2.jpg
Views:	4852
Size:	16.3 KB
ID:	52698  

Click image for larger version

Name:	3-way miter3.jpg
Views:	3407
Size:	23.7 KB
ID:	52699  

Click image for larger version

Name:	3-way miter.jpg
Views:	1052
Size:	14.1 KB
ID:	52700  


-Jeff G
buktotruth is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 10-12-2012, 02:37 PM
Senior Member
 
Dave Paine's Avatar
 
Join Date: May 2012
Location: Eastern PA
Posts: 7,222
View Dave Paine's Photo Album My Photos
Quote:
Originally Posted by buktotruth View Post
Hi everyone,

I'm looking to make a simple box that has plexiglass walls. I was thinking of doing this with 3-way miter joints all around the box, but I'm not sure they'll be strong enough (given the end grain joint). Any thoughts on either a) how to reinforce them or b) an alternative build suggestion?

Below is a quick sketchup version of what I'm thinking for the corners
You are correct a simple mitre is likely not strong enough due to all the end grain.

If you want the look of a 3 way mitre, the best method of construction I have seen to date is this "chinese" 3 way mitre. Good explanation.

http://www.finewoodworking.com/item/...-chinese-style

This is not for the faint of heart.
Dave Paine is offline  
post #3 of 8 Old 10-12-2012, 08:22 PM
John
 
Join Date: Mar 2010
Location: La Crosse, Kansas
Posts: 3,028
View jschaben's Photo Album My Photos
Quote:
Originally Posted by Dave Paine View Post
You are correct a simple mitre is likely not strong enough due to all the end grain.

If you want the look of a 3 way mitre, the best method of construction I have seen to date is this "chinese" 3 way mitre. Good explanation.

http://www.finewoodworking.com/item/...-chinese-style

This is not for the faint of heart.
no kidding

John

If I strive for perfection, I can generally achieve good'nuff, If I strive for good'nuff, I generally achieve firewood
jschaben is offline  
Sponsored Links
Advertisement
 
post #4 of 8 Old 10-12-2012, 10:30 PM
where's my table saw?
 
woodnthings's Avatar
 
Join Date: Jan 2009
Location: SE, Michigan
Posts: 27,615
View woodnthings's Photo Album My Photos
If the joint scares you

Consider this. Think of making a mitered or bevel sided box. Make your panels in the rectangular form, then bevel or miter all the edges like you would if the panels were solid hardwood or plywood. The joints will take care of themselves if the plexiglas panels are structurally sound. A bond of adhesive or silicone in the dado/groove will hold them together while the bevels are carefully cut on the edges. Your saw must be set dead on at 45 degrees. A sharp blade of 60 teeth or so should give a nice clean edge. I haven't done it this way so you are on your own with this suggestion, but I have made solid panel boxes this way.

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 online now  
post #5 of 8 Old 10-13-2012, 06:14 AM
Old School
 
cabinetman's Avatar
 
Join Date: Jul 2007
Location: So. Florida
Posts: 24,027
View cabinetman's Photo Album My Photos
Quote:
Originally Posted by buktotruth View Post
Hi everyone,

I'm looking to make a simple box that has plexiglass walls. I was thinking of doing this with 3-way miter joints all around the box, but I'm not sure they'll be strong enough (given the end grain joint). Any thoughts on either a) how to reinforce them or b) an alternative build suggestion?

Below is a quick sketchup version of what I'm thinking for the corners
Just a few questions:

When you say "plexiglass walls", are you meaning wood framed acrylic panels?

IOW, see through on all 4 vertical sides?

If the panels are wood framed, what is the size of the frame pieces and what species?

What will be the overall size of the box?





.
cabinetman is offline  
post #6 of 8 Old 10-13-2012, 12:38 PM Thread Starter
Jeff G
 
Join Date: Nov 2010
Location: Pittsburgh, PA
Posts: 189
View buktotruth's Photo Album My Photos
First, regarding the Fine Woodworking article. I saw that and it seems just a bit more complex than I'd like :)

As for the questions:

The box will be roughly 16" long x 8" deep x 8" high. And yes, the idea is to have all four sides transparent (actually 5...including the top...though this is easier as it will be a hinged top so I basically just need to make a simple frame). The bottom will be a base that the four "walls" (plexiglass framed walls) are glued to and the top will be open (plus hinged lid).

-Jeff G
buktotruth is offline  
post #7 of 8 Old 10-13-2012, 12:52 PM
Old School
 
cabinetman's Avatar
 
Join Date: Jul 2007
Location: So. Florida
Posts: 24,027
View cabinetman's Photo Album My Photos
What is the size of the frame pieces and what species?





.
cabinetman is offline  
post #8 of 8 Old 10-13-2012, 02:28 PM Thread Starter
Jeff G
 
Join Date: Nov 2010
Location: Pittsburgh, PA
Posts: 189
View buktotruth's Photo Album My Photos
Quote:
Originally Posted by cabinetman
What is the size of the frame pieces and what species?




.
All TBD...maybe 1.5" square. Probably ash, walnut, our cherry (what I currently have in the shop)

Jeff

Sent using Woodworking Talk

-Jeff G
buktotruth 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
Miter Joint Help jamesarp Joinery 4 01-07-2012 09:38 PM
Wood Reinforced Epoxy Composite Construction Davebla General Woodworking Discussion 4 05-07-2011 08:26 PM
For Sale: Craftsman Table Saw Box Joint and Miter Guide Northerner Classifieds 13 03-02-2010 07:43 PM
Reinforced attic Howard Ferstler Project Showcase 2 07-10-2008 05:17 PM
to make the perfect miter joint yogert909 Joinery 3 09-17-2007 10:10 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