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Floating Desk Answered

I've been thinking about making a desk for my new room. The best place for it would be to put in a a corner. I'm looking at dimensions of 41x21". What i want to do is make it floating so that i wouldn't have leg posts in my way. I've seen elsewhere floating shelves made from interior doors and was thinking about incorporating that into my desk design. 

What i want to do is cut an interior door to this 41x21" dimension. Then hang it up just like you would a floating shelf. Because it's in a corner i would have the advantage of being able to cleat not only the back but also one of the sides. Once i had it in place i planned to put a supporting bracket on the floating side for a little extra support. 

I just wanted to know what other people thought of this idea. Would it make a sturdy enough desk, or should i use a different material than the door?


Ok, I understand what you mean.

what i've decided to do now is use this idea http://www.hgtv.com/handmade/how-to-make-a-space-saving-floating-desk/index.html but make it not so thick. It would be supported on 2 sides, and instead of having the desk open from the top, i'd make it open from the front or side.


I have to agree with kelsymh a hollow core too would be far too flimsy to use once you have cut it down to the dimensions you state.
I built something similar a few years ago using a length of kitchen worktop, it's heavy duty enough to take considerable weight without flexing & can easily be supported by battens fixed to the wall along the back & side.
The one I built had the floating side supported by a length of heavy duty steel chain fixed to a LARGE hook screwed into a joist in the ceiling although if you preferred you could doubtless use a cable fixed to the wall or indeed stick to your plan of using a bracket.
I used the chain option as I knew that it would have to support a good deal of weight & as it was going in a teenage boys room there was little doubt in my mind that at some point it would end up being sat on by someone; teenage boys will ALWAYS sit on desks, cupboards, floors, upturned bins & even each other before they would consider using a chair so whenever I build a desk or table I invariably design it to support whatever it is being built for plus half as much again plus my own weight around 190lb (I'm not overweight I'm undertall).
Working on that principal you would have to consider supporting kelseymh,s suggestion of 110lb (50kg) + 55lb + 190lb or around 355lb, I know it sounds like a lot but you would be surprised how much a 2' x 1' batten properly fixed at four or five points along a brick wall will support.
You could use a floating shelf bracket but bear in mind that drilling into the board will reduce the supporting thickness of material & therefore the weight it will bear, for this reason I think battens are a better option.
Hope this helps.

I don't think you're going to be able to use an interior (i.e., hollow core) door for this purpose. Such doors have a thin frame around the outside to take hinge screws and install a latch assembly. Otherwise, they're just 1/8" panels for the two faces. If you cut down a hollow-core door, you lose all of the structural integrity of the edges.

Second, I'm not sure that you can really cantilever a 41" x 21" panel off of a wall and have it able to support 50+ kg of load (books, papers, computer, etc.). Floating shelves work because they are extremely narrow, so the torque on the support points is small.

Well, the 41" side will be against the back wall and one of the 21" sides will be against a wall. This will help with some of the support. I also want to put a support on the floating corner for extra support.