Jocelyn McAuley on tue 2 jul 02
On Tue, 2 Jul 2002, Cheryl Hoffman wrote:
> suggestions on handling the humidity thing?
> Thanks, Cher Hoffman
Hi Cher,
Eugene is known to have humidity problems, to the point that lesser used
rooms (with poorly insulated walls) in my past rentals have had serious
mold/mildew problems- yuck!
There are de-humidifiers available for purchase. Perhaps you could put
one to use inyour glazing area?
good luck
--
Jocelyn McAuley ><<'> jocie@worlddomination.net
Eugene, Oregon http://www.ceramicism.com
Cheryl Hoffman on tue 2 jul 02
Hey All,
I'm in humid Florida...we've been having daily drenchings for over 3
weeks now. My bisqued pots are stored in an open air studio, so I know they
must be saturated with moisture. I'm relatively new to Florida and have
never glazed in these humid conditions.
I started glazing a load and it's giving me fits! When I lived in a
dryer climate, I lightly sprayed the pot with water before I dipped it. So,
not thinking about humidity, I sprayed the first pot & dipped. Pot was
covered with air bubble pin holes. Tried a pot without spraying...too thick
and had fine crackles. Thinned the glaze...even more air bubble pin holes.
Let the glaze settle and sponged off some water to make it thicker...glaze
flaked off. I've used this glaze on these clay bodies during our dry season
and had absolutely no problem, so I'm stymied. I bisque to cone 05. Any
suggestions on handling the humidity thing?
Thanks, Cher Hoffman
Jocelyn McAuley on wed 3 jul 02
On Wed, 3 Jul 2002, Martin Rice wrote:
> one for clothes, and one for books and papers. I had thought about drying
> pieces in these rooms, but didn't know if it might cause them to dry too
> quickly. Does anyone have any experience drying pieces in dehumidified
> rooms? If so, how'd it go?
Hi Martin,
Actually, I know this may sound nuts, but you can dry work very well in a
high humidity environment. This is one method used by industrial ceramic
producers. The combination of high heat and high humidity causes a more
even drying of work. You have a prime work environment to make this work!
Digital fire goes into this method here:
http://digitalfire.com/magic/drying.htm
Ah, Costa Rica... I envy you!
Good luck
Jocelyn
--
Jocelyn McAuley ><<'> jocie@worlddomination.net
Eugene, Oregon http://www.ceramicism.com
Imzadi . on wed 3 jul 02
try putting the pots in the kiln on very, very low for a couple of hours and
let the heat dry the pots a bit right before glazing.
Imzadi
Nanci Bishof on wed 3 jul 02
I'm in NE Florida. I haven't had that problem with glazes. Occasionally when
I majolica, I'll get pinholing. I just lightly finger sand the dried glaze to
smooth the surface. If you're getting the pinholes and hairline cracks over
the entire surfaces of all your ware that probably isn't a viable option. You
could bisque to a lower temp, say ^08, and see if that helps with your
original glaze consistency and glaze methods. Misting the surface should help
to wick the glaze into the porous body.
nanci
Martin Rice on wed 3 jul 02
> On Tue, 2 Jul 2002, Cheryl Hoffman wrote:
> > suggestions on handling the humidity thing?
> > Thanks, Cher Hoffman
>
> Hi Cher,
>
> There are de-humidifiers available for purchase. Perhaps you could put
> one to use inyour glazing area?
>
> good luck
> Jocelyn McAuley ><<'> jocie@worlddomination.net
Here in the jungle in Costa Rica, especially now in the rainy season, the
humidity is very high. We have three large dehumidified rooms, one for food,
one for clothes, and one for books and papers. I had thought about drying
pieces in these rooms, but didn't know if it might cause them to dry too
quickly. Does anyone have any experience drying pieces in dehumidified
rooms? If so, how'd it go?
Thanks,
Martin
Lagunas de Barú, Costa Rica
www.rice-family.org
Russel Fouts on fri 5 jul 02
Jocelyn
> Actually, I know this may sound nuts, but you can dry work very well in a high humidity environment. This is one method used by industrial ceramic producers. The combination of high heat and high humidity causes a more even drying of work. You have a prime work environment to make this work! <
You make a good point. There used to be someone on the list who wrote a
newsletter called "Kiln and Dryer". It was fascinating and he advocated
fast drying in an environment of controlled heat and humidity.
I adapted this to my own purposes. The water heater for the house is in
my studio (the only heat I have). Part of the system is a low unit about
waste high with a flat top. It's always mildly warm.
I put pieces on top of this with an empty clay bag as a tent over them.
The bags are stiff and stand by themselves. The bag shouldn't touch the
pot anywhere. I turn the bags inside out every day to get rid of the
water that condenses on the sides of the bags.
Things dry fast, with no cracking; even solid or semi-solid stuff)
Russel
--
Russel Fouts
Mes Potes & Mes Pots
Brussels, Belgium
Tel: +32 2 223 02 75
Mobile: +32 476 55 38 75
Mailto:Russel.Fouts@Skynet.be
Http://www.mypots.com
http://www.Japan-Net.ne.jp/~iwcat
"There is a theory which states that
if ever anyone discovers exactly what
the universe is for and why it's here,
it will instantly disappear and be
replaced by something even more bizzarly
inexplicable."
"There is another theory which states
that this has already happened!"
Douglas Adams' The Hitch Hiker's Guide to the Galaxy
Jocelyn McAuley on fri 5 jul 02
Thanks for providing the testimony to back this claim up.
I had forgotten about this correlation, however my rememberance should
coincide well with our recent sunny weather here.
I was throwing pedestals the other day and they dried too quickly when I
put them out in the sun- three out of ten developed stress cracks.
Tommorw, I'm going to do this again, except this time I'll put black
plastic over the work- out in the sun.
> I put pieces on top of this with an empty clay bag as a tent over them.
> The bags are stiff and stand by themselves. The bag shouldn't touch the
> pot anywhere. I turn the bags inside out every day to get rid of the
> water that condenses on the sides of the bags.
>
> Things dry fast, with no cracking; even solid or semi-solid stuff)
>
> Russel
--
Jocelyn McAuley ><<'> jocie@worlddomination.net
Eugene, Oregon http://www.ceramicism.com
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