On 25/04/2017 11:51, Bert Coules wrote:
I have to erect some shelves: 22 inches wide, supported at the ends by
heavy-duty bookcase-type uprights and brackets. This is to hold fairly
weighty audio-video equipment.

Given an equal thickness (18mm? 20mm? More?) and a choice between MDF,
plywood, veneered chipboard, solid timber or something else, would any
particular material be preferable? 22 inches isn't much of a span, is
it? And appearance isn't really a factor.

Many thanks.

Cut the tops of these up, they are remarkably stiff for their weight.


http://www.ikea.com/gb/en/products/t...-art-20011408/

You can see how stiff they are at http://printtable.com/