Ollie78
Established Member
Maybe Tulipwood would be stronger than mdf or at least less saggy, very cheap and paints lovely too.Solid maple sawn boards 150 x 32 mm sound like they may be coming in at about £40 per 9 foot length.
Timber like that would make far stiffer shelves than mdf. You might get away with 3 foor spans.
If you can process it, is it worth stumping up the ££ ?