Kreg Owners' Community

Which would have more weight capacity a solid sheet of 3/4" plywood or a 3/4" sheet of plywood with 1 x 4 running through it? Possibly going to have the 1 X 4's under it but not sure if I want them to show as part of the pattern.

Views: 346

Reply to This

Replies to This Discussion

I would think the 3/4" plywood would be stronger.  The grain of the plies are supposedly crossed, and the glue is supposedly stronger than the wood.

What kind of weight are you talking about? It may depend on what you are building. Flooring can be made with 3/4" plywood but they will have reinforced underneath with 2x4. Likewise, a bookcase can be made with 3/4" plywood but the shelves only need to be reinforced in the back with a groove and the front with a solid piece of wood to cover the plys.

This is for the coffee table equivalent of my shadow box side table.  The side table is smaller, but is currently holding well over a hundred pounds on the inside of it.  The coffee table, being longer, will most likely get even more put into it.  I am planning on building it 2 inches shallower, so this may keep the really big stuff out of it, but it will still hold a lot of weight.  The plywood is the bottom of the box.  

Debating these options:

1. Leave it a solid piece and secure every 4 inches.

2. Leave it a solid piece and run 1x4 supports under the bottom (will be seen from underside above bottom shelf).

3. Cut the plywood to smaller pieces and join to 1x4s maintaining the original over all size but using different types of wood and more screws. (Will be seen on top)

Which of these options would be able to make me least nervous about putting anything on the bottom shelf that I don't want squished?

I would go with option 2 or 3. With option 1, even if the plywood seems OK initially, over time the middle will sag.

Ronda,

I looked at your side table project and it appears you are using pine and a pine veneered plywood.  Have you considered making the bottom out of 3/4" Baltic Birch plywood? It has less voids in the inner plies and is therefore stronger.  To maintain the same look as your side table you could glue a piece of 1/4" pine plywood to the top of the Baltic Birch.  This would give you a 1" thick base to your shadow box table.

Don

I went with Option 2.  The bottom is holding well, haven't put too much weight on the bottom shelf yet, but expect at the next family party for some little munchkin to be crawling around on it.

Attachments:

research torsion box design it will hold a lot more weight and weigh less

Reply to Discussion

RSS

Need Help?

For Technical Support, please call 800-447-8638 or send a message. Reps are available Monday through Friday from 8am to 5pm CST. 

Videos

  • Add Videos
  • View All

Forum

Miter saw stand

     Has anyone used one of the Kreg Universal Stand configurations as the base for a miter saw workstation with fold down wings?  I scrolled through the pics in the community and all I saw were using a DIY base cabinet.  I have an extra Kreg router…Continue

Tags: saw, Miter

Started by Bill Murphy in Other Kreg® Products Jun 6.

French cleats 101 advice please

Hi all I am kind of new to the forum. Though I have been a kreg owner for more years than I can recall. As a CSS  (Complete Set Syndrome) sufferer I have obvious;ly got one of everything kreg make ( in my price bracket). LOL.  after years of waiting…Continue

Tags: Unklejon, french, Cleats

Started by John Hoskison in General Woodworking May 27.

Product Reviews

New Kreg 720Pro

I saw the video Kreg put out for this new jig and had high hopes for it.

I purchased one today and am very disappointed with it.

First the docking station is extremely cheap. The plastic is pathetic. A Lego has more…

Continue

Posted by Duke Leon on February 15, 2021 at 9:00pm

Not Pleased With Pocket Hole Construction

Several months ago, I purchased the Kreg K4MS so that I could build the Lego Table as outlined on the companion "buildsomething" web site which exclusively uses pocket hole construction.  I have considerable experience with conventional…

Continue

Posted by Robert Ringel on September 17, 2020 at 1:48pm — 5 Comments

© 2021   Created by KregRep.   Powered by

Badges  |  Report an Issue  |  Privacy Policy  |  Terms of Service

_