I tried some experiments with plinths some time ago, and mdf is good stuff. just because it is cheap to obtain and machines like a dream can be misleading, when one thinks about the requirements of a tt.
I liked it better than plain acrylic, much better than plain steel, in fact, I would say that you would pretty much have to use a constrained layer construction of the RIGHT materiels to do better than mdf. (this is plinths and armboards). The only drawback to mdf is that it sensitive to wheather and temperature, and not really durable unless it is properly coated. But than again, acrylic is also sensitive to temperature changes.
I hope this puts things in a perspective for you.
I liked it better than plain acrylic, much better than plain steel, in fact, I would say that you would pretty much have to use a constrained layer construction of the RIGHT materiels to do better than mdf. (this is plinths and armboards). The only drawback to mdf is that it sensitive to wheather and temperature, and not really durable unless it is properly coated. But than again, acrylic is also sensitive to temperature changes.
I hope this puts things in a perspective for you.