Frame Press

[Kevin Jenness]

Kevin, do I interpret it correctly that the lid of your unit fits over the grooved platen snugly enough that the vacuum doesn't pull it towards the center? That was a huge problem with mine. Adding a mid-span crossbar didn't completely stop it. I went back to using a bag because of that, but I still have it.

John

Yes, that's right. I suspect part of the reason (maybe the whole reason) commercial units don't have that problem is because the membranes are typically formed in a box shape and the vertical pleats take up the slack, whereas my simple flat polyurethane sheet pulls the frame in as it is sucked down to the platen. I too tried a crossbar initially without much success.