walnut ply platform frame feasability - Woodworking Talk - Woodworkers Forum
 
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post #1 of 7 Old 07-11-2011, 05:29 PM Thread Starter
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walnut ply platform frame feasability

Hi everyone,
Im trying to build an inexpensive, minimal platform frame for a queen size mattress. The idea is to use two 3/4" sheets of walnut veneer ply, cut as shown (see attached), glue and screw laminate, and add steel hairpin legs. My question, based on the attached drawing, will 1-1/2" thick laminated plywood frame support two adults without warping, sagging over time? Any major oversights here? Thanks very much.
Justin
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File Type: pdf PLY BED.pdf (84.8 KB, 185 views)
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post #2 of 7 Old 07-11-2011, 06:54 PM
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Couple concerns:

1. Never heard of Hairpin steel legs, so I looked them up and found a company that sells them. Some look a bit more sturdy than others. My concern would be stability of just running a screw into the plywood. Screws could work their way loose with repetitive side load from getting in and out of bed or several bouts of friskiness. I would use a bolt/washer instead that would go all the way through and grab from the top as well.

2. Would also be concerned about sagging/deflection along the sides/ends. That is probably where you would be sitting to climb in and out and concentrating more weight there. You could add a skirt board all the way around to give it more strength (and hide the plywood edges. If you did that, I would also add some vertical cross supports in the middle of the bed as well, tied to the flat pieces as well as the upper sheet and tied into the side skirts. Another option would be to add more legs as well.

I may be overkilling it, but I try to make things like beds bullet proof. Don't need a collapsing bed to spoil the moment or hurt sombody.
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post #3 of 7 Old 07-12-2011, 08:05 AM Thread Starter
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thanks shu, i was thinking about picking up extra legs just in case, and yes, good idea of using through bolts.
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post #4 of 7 Old 07-27-2011, 01:36 PM
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Just curious if you've made any progress with this? A queen platform bed is going to be my next project so I'd love to see with yours turns out.
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post #5 of 7 Old 07-27-2011, 02:56 PM
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Quote:
Originally Posted by brooklynarch View Post
Hi everyone,
Im trying to build an inexpensive, minimal platform frame for a queen size mattress. The idea is to use two 3/4" sheets of walnut veneer ply, cut as shown (see attached), glue and screw laminate, and add steel hairpin legs. My question, based on the attached drawing, will 1-1/2" thick laminated plywood frame support two adults without warping, sagging over time? Any major oversights here? Thanks very much.
Justin
Doubled up 3/4" Walnut plywood would be sufficient for a bed frame. For a base, I make a toe-kick style boxed out frame like depicted in this drawing. It offers maximum support. The drawing is for a two piece for a king size. It can be one piece for queen size.








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post #6 of 7 Old 07-27-2011, 09:15 PM
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im kinda not feelin the leg thing. why not do it like the old waterbeds. rip ply to your height, cut them out so they will chris cross, and support the middle. if the ply is not showing why use walnut ply.
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post #7 of 7 Old 07-28-2011, 08:25 AM Thread Starter
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bedframe not going to happen

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Originally Posted by renovatio View Post
Just curious if you've made any progress with this? A queen platform bed is going to be my next project so I'd love to see with yours turns out.
thanks for your interest but we just broke down and bought a frame from a local store, its not ideal but its probably cheaper than what it would have cost to buy the wood and have it cut. good luck with your project.
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