Film dries fairly quickly with out much heat. A little convection and low
humidity are the key ingredients. A 100 watt bulb located at the bottom
should raise the temperature (which reduces relative humidity) and create
the convection currents needed. Too much heat will promote curling, which
can be troublesome especially with thin base film (read 120 or 220). I'm
talking about a reasonablesized film drying cabinet here, say 2' x 3' x 6'.
If you are in a production situation using a larger cabinet you will likely
need more heat. Just add another lamp 'till you get it tuned the way you
want.
Previous posting about filtering the air is not to be ignored.
Hal
-----Original Message-----
From: DKenn473@aol.com [mailto:DKenn473@aol.com]
Sent: Friday, June 05, 1998 8:10 AM
To: alt-photo-process list
Subject: dry cab.
A sun lamp might be easier and gererate alot more heat.
David
In a message dated 98-06-04 20:56:39 EDT, you write:
>
> Paint the inside of the can flat black (a two-quart juice can is a good
> choice), screw a CERAMIC (NOT PLASTIC) socket to something at the bottom
of
> the cabinet, and figure some way to hold the can upside-down over the
bulb.
> With low-wattage (say, 40 watts or less) bulbs you can let the can simply
> enclose the bulb totally. With higher wattage bulbs you should leave a
gap
> at the open end of the can to allow some air to circulate around the
bulb.
> Poking a hole or two in the topmost surface of the can will keep the bulb
> itself cooler (and prolong its life) without altering overall efficiency.
> Regulate the heat with your choice of bulb (and a dimmer if you want to
get
> really fancy).
>