I'm currently planning a new 3m desk. Do I have to have a support in the middle of a 3m plate to prevent sagging in the long term?
What I will use for the desk:
2x Ikea storage containers (thought of as "legs"), come left and right
1x 3000x600x38mm kitchen worktop from Bauhaus, comes on the two storage containers.
Weight on the plate: max. 1 monitor, 1 laptop, 2 keyboards, 2 mice, 1 PC (on the right, directly above a storage container, weight on the outside). Everything else will be hanging on the wall.
Then screw a double T-beam in the middle!
Would definitely add another support in the middle. The tensile strength of the worktop is based solely on the lamination. Alternatively, you can place a "crossbar" under the plate.
Kitchen worktop from Bauhaus - this will probably be a chipboard with a melamine coating. If you are three meters long you should have a support; bending is not the problem, but rather the danger of breaking. Glued wood from a carpenter would make more sense. Or put a steel beam underneath. However, you will bump your knees there.
Since you will probably use this for a few years, you can't be sure that someone will lean on the table.
If something too heavy hits the center (someone leans on, for example) the plate will bend and possibly even break.
It's not a solid wood panel.
You could use the long side on the wall e.g. Place on a lath that is dowelled on the wall. That could be enough.
Under the long side on which you sit (or in the middle), you could place a lath or a square aluminum profile screw to elegantly reinforce the plate.
In other words, if I were to use a solid wood panel, I wouldn't need a square or something similar. Attach underneath?
The kitchen worktop will bend under its own weight.
For screen work you should have a table depth of at least 80cm. The depth of freedom is also insufficient.
The postforming table edge of kitchen worktops is unsuitable for working on the keyboard, mouse or joystick
A sufficient distance from the wall would have to be installed for cabling.
The desk will not be against a wall. The monitors will hang on the wall. The monitor that is on the table is not necessarily used. I was more concerned with weight.
Could be. Of course, it also depends on the wood and the panel thickness.
But solid wood is heavy and also more expensive to buy. In addition, the surface can be more sensitive.
You should plan at least one storage container in the middle.
Ordinary table legs would certainly work too, right? Would that look different with solid wood?
Generally, yes. You have to reach a diagonal bracing.
With solid wood you could and would certainly become slimmer. No 38mm thick tabletop but 25mm. The edge of the table could be processed individually, the surface made alive (e.g. Waxed / oiled), the table depth is relatively variable and cable openings where necessary.
I would find a glued wood panel much nicer:
https://www.bauhaus.info/leimholzplatten/c/10000759
Have you thought about the transport / delivery?!
Was at Bauhaus today and chose https://www.bauhaus.info/massivholzplatten/exclusivholz-massivholzplatte/p/24633220. Is solid wood, 26mm thick, surface has already been treated. Then let me shorten it.
Will I still need a support or square under the plate?
I'll have the record delivered to me. I have no way of transporting such a plate. Even if it will cost a lot.
You should plan a maximum of 120cm self-supporting. You can also attach it to the back of the wall.