Newbie needs help with floating shelf and pocket joints - Woodworking Talk - Woodworkers Forum
 
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post #1 of 7 Old 09-24-2016, 10:13 AM Thread Starter
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Newbie needs help with floating shelf and pocket joints

Hey, been searching for an answer but get conflicting reports. Im building a floating media cabinet out of 3/4" pine plywood. It is 70" long, 15" deep, and roughly 16" tall. Basically a rectangle with 6 dividers in it, (shelves to come later). I have the joints glued with a thin layer of elmers then one pocket screw at the front and one at the back. Was going to do this at the top and bottom. The weight that will be in each opening is as follows: 5lbs, 16lbs, 30lbs, 16lbs, 5lbs. So roughly 72lbs across. Its holding a receiver, cable box, game consoles, misc equipment, etc. I planned on mounting it across 3 studs just using a 1x3 in three of the openings pocket screwed to the top shelf then screwed into the wall from that.

Do you think this will hold? What should I do to prevent sag? Should I add a couple screws to each divider? Ive included a pic so you can see what I have started.

Thanks.
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post #2 of 7 Old 09-24-2016, 10:17 AM
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Well done, I had a media stand made....cost about $400.
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post #3 of 7 Old 09-24-2016, 10:53 AM
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It should be plenty strong mounted as you described - the weight of the shelf will be held by the screw where the screw would have to shear before it pulls out of the wood, and it would take a good 500 pounds per screw for that to happen. Most of the weight will be sitting on the 1x3 anyway.
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post #4 of 7 Old 09-24-2016, 02:54 PM
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If I were building that unit, I would add more pocket screws- at least three per joint but four total would be better. They make a strong joint.
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post #5 of 7 Old 09-24-2016, 06:34 PM Thread Starter
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Thanks for the replies. I think I will add 2 more pocket screws to each joint also.

Does it matter that one side is already glued? Adding more screws wont do anything negative?

Is Elmers wood glue adequate or should have I used something else?

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post #6 of 7 Old 09-25-2016, 08:55 AM
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Elmer's wood glue is as strong as you need, and no, adding more screws won't hurt anything.
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post #7 of 7 Old 09-26-2016, 01:01 AM Thread Starter
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Added the other dividers today and the top, had a couple alignment issues, had to readjust slightly after the glue started to become tacky. It seeed to squeeze out still after it was already screwed once. feels pretty solid. Ill update with pics as I go. Im sure Ill have more questions.
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