Working/cabinets plywood thickness - Woodworking Talk - Woodworkers Forum
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post #1 of 6 Old 03-23-2019, 11:23 PM Thread Starter
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Title should be "workbench/cabinets..."

Hi all.. I'm going to be building Jay Bates' miter saw stand soon and curious on my plywood.. can I use 1/2 or should I stick with 3/4 like the plans say? I did email Jay with the same question, and he said 1/2 should be fine. Curious what y'all think?
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post #2 of 6 Old 03-24-2019, 12:00 AM
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Not really enough information. 1/2" plywood isn't as strong as 3/4". It would depend on where you use the plywood and the spans.
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post #3 of 6 Old 03-24-2019, 07:52 AM
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Need info on your box design.

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post #4 of 6 Old 03-24-2019, 08:04 AM
where's my table saw?
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Yes, and No .....

First, determine the price difference between 1/2" and 3/4" per sheet.
Then determine the width of the cabinet and shelves. If the cabinet is 24" or less in width, 1/2" ply should work. If it's more than 24" then you need 3/4" up to 32" wide.

You can mix the 2 thicknesses, using 1/2" ply for the sides and back and 3/4" for the top, shelves and bottom, BUT that may be NOT economical in the long run. Just use 3/4" for everything. You will want to glue the back to the shelves and inset it into the top, sides, and bottom. This means the shelves will need to be "inset dimension" .... less wide. Actually, 3/4" on the back is a bit "overkill", but if you make a rabbet for your shelves, probably best. Otherwise, gluing and nailing on a 1/2", 3/8" or even 1/4" back will be fine.

The material thickness must fit the specific application in the project, thicker for shelves that sag under load, thinner for vertical supports.

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)

Last edited by woodnthings; 03-24-2019 at 09:43 AM.
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post #5 of 6 Old 03-24-2019, 08:12 AM
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Why do you want to use 1/2"?

Hard to tell from a screen shot what the build info is. I've used 1/2" ply for cabinets in a van, worked fine, you have to understand the challenges with a thinner material.

If you are confident in your build skills to understand that, then use a thinner product, if you aren't then build it as the designer indicated, hard to believe you are savig much $$ with using 1/2" instead of 3/4".
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post #6 of 6 Old 03-25-2019, 12:35 PM
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It might help to know why you ask.

If you are trying to save money, it may be a false economy. Divide the difference in cost by the number of years you plan to use it. I would expect to use a miter saw stand for several decades at least. If the worst-case difference in cost is $30 and you use the miter saw stand for 30 years, that's $1 a year.

I vote for 3/4 inch plywood as originally specified.
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