Marilu on fri 19 mar 04
Hello I am getting ready to mix my first test batches of glazes and engobes
with coloring. I have a respirator I plan to use but am wondering if I
should also be venting the room? My husband came up with an idea but I am
not sure it is a good one. He said he thought he would cut into the tubing
for the kiln vent and put a y tube in with a damper on it. He said the
damper would be shut when the kiln was being used and only opened when
using the vent for mixing chemicals.He also plans on installing a metal
hood over the glazing area for when the vent would be used for mixing
chemicals but not over the kiln. Any opinions? Does anyone have an easy way
they vent for mixing chemicals? I can only find info on kiln vents in the
archives-Thanks for any help-Marilu
Ruth Ballou on sat 20 mar 04
Marilu,
My husband made a glaze mixing hood for me. It was pretty low tech and
wouldn't have won any beauty contests, but I think it worked very well.
He built a box out of plywood to rest on top of the table I used for
glaze mixing. The front was open, with a 6 inch lip extending down from
the top to create air circulation within the box. The box created a
contained space for glaze mixing that was easier to vent. He cut a hole
in the top of the box over which he installed an attic fan in its own
enclosed plywood box. The fan was vented out a nearby window with
flexible garden tubing. All the joints were well sealed with caulking
and duct tape. He also used a heating system duct to concentrate the
suction right over where I placed the gram scale. We tested it by
blowing out some candles and seeing how well the smoke was removed. It
went right up. Who knows if the EPA or OSHA would have approved it.
Cost was pretty much limited to the fan. We had the plywood and the table.
I don't think a kiln vent will move enough air to vent a room for glaze
mixing. Check the CFM (cubic feet per minute) rating of any fan you get.
The more frequently the air under the hood is exchanged, the better you
will protect your lungs. I'm sure there's an OSHA recommendation for
how often that is.
Ruth Ballou
Lately of Silver Spring, MD
Recently rumored to have resurfaced in Brussels
Marilu wrote:
> Does anyone have an easy way
>they vent for mixing chemicals? I can only find info on kiln vents in the
>archives-Thanks for any help-Mari
>
>
Ron Roy on mon 22 mar 04
Hi Marilu,
The draw from a kiln vent will not be strong enough - better to have a
separate fan that can move a lot more air.
It's easy to test for - make some dust and see if it's drawn away.
The other problem - if you forget to block off the tube from the dust
collector you will not have kiln venting - or it will be much reduced.
RR
>Hello I am getting ready to mix my first test batches of glazes and engobes
>with coloring. I have a respirator I plan to use but am wondering if I
>should also be venting the room? My husband came up with an idea but I am
>not sure it is a good one. He said he thought he would cut into the tubing
>for the kiln vent and put a y tube in with a damper on it. He said the
>damper would be shut when the kiln was being used and only opened when
>using the vent for mixing chemicals.He also plans on installing a metal
>hood over the glazing area for when the vent would be used for mixing
>chemicals but not over the kiln. Any opinions? Does anyone have an easy way
>they vent for mixing chemicals? I can only find info on kiln vents in the
>archives-Thanks for any help-Marilu
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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