Hoefer SE640 - Manual (Page 17)

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p9
Club sandwich
A notched center divider plate (ordered separately)
pairs two sandwiches to double the number of gels
that can be cast and run.
Assemble a club sandwich in the same manner as
a regular sandwich, except before placing the top
glass plate, lay the divider plate and a second set
of spacers on the stack. Place the notch so that it
will be at the top of the gels. It is essential that the
spacers and plates align perfectly in order to create
a seal.
4
Remove the sandwich and inspect the bottom to make
sure that edges are aligned flush in order to ensure a
complete seal. Adjust if necessary.
Optional: Apply a light film of Gel Seal compound only
on the bottom corner surfaces created by the spacers
and plates if your sandwiches continue to leak after
several attempts of alignment.
spacers
glass plates
(at the outer sides
of the sandwich)
notched
center plate
Fig 3. Club sandwich assembly.
Side clamps will accommodate
two spacers up to 1.5 mm thick.
Note: Do not use silicone grease
or petroleum jelly to seal the
sandwich. These substances
are difficult to remove and ulti-
mately cause artifacts.