Was that for veneer pressing? Frankly on slab doors I'd have gone for a glue film and simply ironed the veneer on, or alternatively spray contact adhesive. Both a lot faster with good results when done competently, especially if you lip your MDF blanks with hardwood first
Nah, I was making lazy shaker doors. A 9mm door, with 9mm styles and rails glued on, with some 18g brads to stop them sliding.
I used the vacuum press because I don't have a gazillion clamps.