I pulled the frame apart and replaced some old foam rubber that sits under the ribbed bed of the frame with some nicer neoprene. The pressure remained the same throughout - at least on the dial, but who knows? While I wait for my roll of Kreene to arrive I tried using a thin (1mil) sheet of Mylar as you would with Kreene. No more contact problems - at least for now. I'll run some more tests tomorrow just to make sure and keep you updated.
On May 2, 2007, at 8:37 PM, SusanV wrote:
Have you been getting the same measure of vacuum? Let us know what you find out. Hope it's nothing major. As for trying out the Kreene.. I taped a piece of it to the bottom of my glass. The glass on my NuArc is "frameless" and fits into a hinge at the back of the bed. Using the Kreene under the glass this way just relegates it to an "anti-newton" film which seems to be working for me. The glass actually still holds the vacuum.