Making a Desk

2 Dec 2012
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United Kingdom
hi everyone.

I am planning to make an L shaped desk. The top will be made from a 1.2m X 2.4m sheet of material with a 400 X 800 piece cut out. I am planning to make the sides and back from 18mm beech ply.

What I am not sure about is what to use for the top so that it does not sag if leant on or sat on. How thick would it need to be? 25mm beech ply seems to be difficult to get hold of and expensive. MDF might flex. any suggestions?

Also, what finish would be best. I would like a clear finish, not too shiny, but hard wearing


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18mm ply or mdf will be fine but requires either timber support below or a leg at the internal corner,[set back] many options available. Curving the cutout would give a better look and be more comfortable to sit at.
you can also make or buy shelve/drawer or cupboard units to give support
Yes, I will curve the cut out.

I don't want to put a leg at the cut out. I want to put a ply rectangle going down to the floor along the short side of the "L", a ply rectangle along the long side of the "L", but not going down to the floor and a ply rectangle going down to the floor a the top end of the long side of the "L".

This means that the desk top at the front is unsupported from end to end (2.4m).


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A 3x2 screwed to underside set back about 6 inches will give the length support and not get in the way.

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