Maybe if was cat pee.
Make sure joints are over a bracket .
Had a problem with one which had a loose gas hinge cover, after a few nails the vibration caused loosened the hinge pin and it stopped firing.
And many other materials.
Swop over to one of these....
You could use 6mm cement board , very rigid and with correct primer will take a skim.
Only screwdriver required....
Probably laid incorrectly with small voids, air bubbles in cement .
Mdf board hinged at knee and lower back positions.Chain or strap along the side can be used to maintain any “fold”.(piano hinges)
Anything you like .
I just run a Stanley down it , only thin mdf.
You could use reduced height cupboards or bridging units which would allow legs and look more in proportion .I would fit with castors instead of...
Price rises with size....
By "Old days" do you mean the time of Wyatt Earp.?
You could add a piece of trim .
Won’t fill flush and can fall out with movement .Hardboard requires nothing more than a Stanley knife to cut .Far less work.
None off my alcoves suited IKEA doors so mdf is used to reduce all dimensions to suit doors.
For free standing unit mdf side panels are used just...
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