Re: [APML] Film drying

[George Anderson <georgea@cam.org>]

Thanks Jim, Chris, and Michael.

I have been trying to find the source where I read not to dry TP with
forced air, but cannot seem to find it.
If the three of you are having no problems with forced air drying I'll
go ahead and build my filtered drying cabinet. I will filter the
incoming air as our area is quite dusty in the summer and the house is
dry (well, dry for eastern Canada) in the winter.
I'll stick with room temp air as the cabinet will be melamine covered
particle board with a foam rubber gasket on the door. I have a small DC
tangential blower which I can adjust to get the airflow that I want
through the cabinet and a Bionaire Filtrete HEPA filter should stop the
dust from entering.
And the blower should be quiet enough not to attract the attention of my
very inquisitive three year old who loves anything with lights,
switches, or levers. He has yet to discover the other side of the door
in the rec room and won't for some time.

George Anderson
Montreal Canada

Clear skies and good health

Michael Stecker wrote:
> 
> Hello George:
> 
> I used to have problems with dust on the negatives until I used a heat gun
> to decrease the drying time.  The faster the film dries the less chance
> there is for dust sticking to the film.  I use a "Monocote gun" (similar to
> a hair dryer, but hotter) which uses a heating element and fan to force hot
> air onto a surface.  It is primarily designed to shrink plastic film used in
> covering model airplanes.  You must use care in not overheating as this
> might cause a problem.  However, in my 20+ years experience with using it
> with Tech Pan and other black and white films, I have never encountered a
> problem and almost never get dust on the negatives.  Also, since dust specks
> are extremely rare with a heat gun, I have never seen a need for making a
> drying booth.
> 
> Michael Stecker
> mstecker@dslextreme.com
> 
> My Web Site:
> http://www.homestead.com/mstecker/index.html (INDEX)
> http://www.homestead.com/mstecker/astrogallery.html (Astroimage Index)
> http://www.homestead.com/mstecker/placesindex.html (Places Index)
> 
> ----- Original Message -----
> From: "George Anderson" <georgea@cam.org>
> To: "APML" <astro-photo@seds.org>
> Sent: Tuesday, October 12, 2004 8:30 PM
> Subject: [APML] Film drying
> 
> >I have a question about drying film.
> > I am thinking of building a cabinet for drying film. My thoughts are to
> > use a low volume (50cfm) blower with a hepa filter on the inlet side.
> > The reasons are to reduce the drying time and to reduce the risk of
> > "dust boogers" on the dried film.
> > However I think I remember reading that forced air drying is a no-no
> > with tech pan.
> > Can anyone confirm or deny this?
> >
> > George Anderson
> > Montreal Canada
> >
> > Clear skies and good health
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> > Astro-Photo@seds.org
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> >
> >
> >
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