I looked into Robert's suggestion of the heating
bar and spoke to the owner there. He said the
bar is about 129° F and then performed like John
Bower said. ;) The owner told a story of a
condo assoc. that was having issues w/mold and
they placed them into the closets there in 60
units and then they decided to buy them for the
rest of the units once the test proved the bars to be effective 6 weeks later.
In a perfect world, I'd love to be able to build
a crate to keep all my gear in as well as prints
which is where I assume it might get tricky
since I'd be creating a warm environment instead
of a cool one. In Thailand all one has to do is
have their gear in an AC'ed room for a while and
once you step outside, the bodies and glass will
fog up nicely. Someone I spoke to recently said
their Leica shutters got rusty, which surprised
me since they were Leica, but I don't recall
what part of the world they had been in.
Desiccant is another option I'm looking into as
well...perhaps for prints? Seems I have some
options at least as Kingmaker has an 18" model that runs on 220V.
Eric
From: Laurence Cuffe <cuffe@xxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Tuesday, December 27, 2011 7:08 PM
Subject: [pure-silver] Re: Humidty Controlled Storage
A heating bar can be quite effective. At one
point I shared a room with a couple of
spectrometers whose bases were heated mildly so
as to protect the optics inside. My boss was
particularly proud of one NaCl prism which had
not neededd to be repolishedd in thirty years.
On a practical side rubermaid containers,
http://www.rubbermaid.com/Category/Pages/ProductDetail.aspx?Prod_ID=RP091418
which can be sealed, and sachets of silica gell
are an effective solution. Silica gell can be
bought cost effectivly from florists, they use
it to preserve dried flowers, and if you get a
few sachets with indicator pellets, you can dry
it out in the oven once it starts to reach its
limit for absorbing moisture. When I moved to
the states, I left some gear in sealed (closed
and taped) containers with about 200g of silica
gell pellets poured into each and it had no
problems. My thinking was that taping the edges
of the container lids would reduce gas//air
exchange and that what fresh air that did arive
as a result of temperature cycling would be dried out by the silica gel.
All the best
Laurence Cuffe
On Dec 27, 2011, at 04:50 PM, John Bower <john@xxxxxxxxxxxxxxxxx> wrote:
This "piano bar" looks like it's just a heating element. As such, it
will raise the temperature of a space, which means that the Relative
Humidity (RH) will go down. Because warm air can hold more moisture
than cool air, if the number of molecules of water vapor doesn't
change in a given volume of air, the RH will go down when the air is
warmed. The number of molecules of water vapor in a given volume of
air is the Absolute Humidity. For cellulosic materials (wood, paper,
etc.), RH is important, because they absorb more moisture when RH is
higher. In winter, the cool air may feel dry but, because the cool
air can't hold much moisture, the RH can be high, and paper (or wood)
will really want to suck it up.
--
John Bower, an Indiana Artisan
http://www.studioindiana.com/
On Dec 27, 2011, at 4:18 PM, Robert Hall wrote:
> We have had a piano for over 50 years. Inside is a bar that acts as
> a dehumidifier.
>
> This is similar to what we have. I've no idea if it will work for
> you but just an idea..
>
> http://www.kingmaker.net/mears0.htm
>
> Robert Hall
> <http://www.RobertHall.com>www.RobertHall.com
> www.RobertHall.com/workshops
> <http://www.facebook.com/robert.g.hall>www.facebook.com/robert.g.hall
>
>
>
>
> On Tue, Dec 27, 2011 at 12:52 PM, Eric
Nelson <<mailto:emanmb@xxxxxxxxx>emanmb@xxxxxxxxx>
> wrote:
> In talking with some folks, the humidity where I'll be moving to
> next year is a concern for camera gear and prints.
> I've not gotten a price quote yet, but am wondering if there is a
> simple inexpensive way to make a cabinet that can achieve similar
> results as a pro cabinet like these. It would be better to have
> something that doesn't cool too much if at all as condensation upon
> removal of a camera etc, would perhaps negate any benefits
>
> http://www.xdry.com/dry-cabinet/desiccator-xd3-1104-01.asp
> http://www.alibaba.com/showroom/camera-humidity-cabinet.html
>
> Thanks
> Eric
>
=============================================================================================================
To unsubscribe from this list, go to
<//www.freelists.org>www.freelists.org and
logon to your account (the same e-mail address
and password you set-up when you subscribed,) and unsubscribe from there.
