On Thu, 14 Jul 2011 22:37:28 -0700, Bob AZ wrote:
On Thu, 14 Jul 2011 21:13:28 -0700, Michael Koblic wrote:

How much force does a common shop vise develop [...]
http://www.flickr.com/photos/27683124@N07/5938730984/in/set-72157622484352534
Can anybody suggest how such force could be measured?
....
Although not sure of the span dimension I am almost sure I could easily
bend the 1/2" plate so any measurements would be questionable unless the
bend of the span were taken into account.

He used 1/4" plate, and in later picture says bending was a problem.
I expect that 3/4"-1" plate probably is needed to avoid much bending.

And from many years of using presses in connection with photography I am
not sure the heat requirements are at all dependent on the pressure.
The pressure is probably needed to assure enough contact so the heat can
do its thing for the mechanical connection of the media. The heat is
probably needed to fuse the media and not completely dependent on
pressure.

Probably so. Unfortunately, the http://www.techniks.com/how_to.htm
Press-n-Peel web page is a bit vague on requirements, merely saying
"Temperature setting on the iron is critical, [...] Suggested starting
temperature is 275-325 degrees F. [...] Iron until board has completely
and fully reached the temperature of the iron. Time varies with the size
and thickness of the board. Generally this is 1.5 to 10 min." They do
offer a HIX Corporation Heat Transfer Press, on their information page.

--
jiw