This is a very useful little project, as it provides some much-needed storage space that can be sited in any room in the house. For the construction I used MDF, a material that often receives a bad press, but which is nevertheless a superb product for painted projects like this. It is flat, stable, easy to machine and relatively cheap.
However there are a few factors to be aware of when you are using MDF. For a start it generates huge clouds of fine dust whenever you machine it, so always take suitable precautions against this hazard by wearing a dust mask, or preferably an air fed helmet. Secondly, although the flat surfaces will finish easily, any machined areas, particularly decorative detail, usually rough up as soon as you apply any form of paint. Finally, the standard MDF is very susceptible to changes in humidity and even storing it in a slightly damp atmosphere will cause the sheets to swell in thickness. Any edges in contact with a damp floor can be as much as 1 or 2 mm thicker than the rest of the sheet. Although not a visible defect this can cause very real problems when you are trying to produce accurately sized components or fitting them in grooves.
In my experience, many of these problems can be overcome by using the moisture resistant form of MDF, which is always coloured very pale green. The moisture resistant quality is achieved by using a different combination of resins during the manufacturing process, and although the result material is slightly more expensive it does have significant advantages. It rarely suffers from the swelling problems of the standard variety and any machined edges are much smoother and paint to a better finish without roughing up.