Hi Lazyeiger,
If your Mould is 8" diameter then it would be 4 * 4 * Pi = 50.3 Sq" Not sure where the 73 Sq" came from?
You are right... Don't know where that came from... :-)
I totally agree with you regarding using psi and not weight when talking about pressing cheese. Unfortunately a lot of recipes state the pressure in weight and not psi - and doesn't even tell which size mould was used. Some even mix up lbs and psi as if it was the same - even in published books... One big confusion!
I think that I will use wood for the frame as you have done - even though the system that you linked to looks smart.
I really appreciate you tips and help - great!!! :-)
:-) Danbo