SAM YANCY on sun 8 jul 01
Inexpensive Spray Booth
I built a very inexpensive portable spray booth for HPLV Low pressure
spray of glazes per the following. Total cost about $30.00
All materials should be easily available at a local hardware store. Here
are the materials I used:
Materials:
One each: Bathroom or kitchen six inch exhaust fan (about, $10.00)
One each: Wiring and plug to connect fan to electrical plug receptacle
(about $4.00).
Two each: Furnace Filters (I used 20x24 inch - about $3.00 on sale)
One each: Expanded metal sheet with large diamond holes (about $3.00)
several feet (estimated 20 ft) of 1x 1 inch boards/sticks (anything
available - about $4.00)
Fiberboard/Cardboard or any thing available to cover the sides and
bottom of the spray booth (about $5.00)
Picture a box about 20 x 24 inch x 12 inch. Fabricate the box out of the
1x1 inch wood/board/sticks and nails/staples/whatever. Cover All sides
AND BOTTOM with fiberboard or cardboard (NOTE-IMPORTANT - the back must
be strong enough to support hold the fan) . In the back cut a hole in
the back and install the exhaust fan with the air blowing OUT so there
will be a negative flow through the box. Size and design the box so that
the filters can slide in (like a stove rack ) while near the very top
of the box. Place the expanded metal above the filters to support the
pottery being sprayed. Note that the expanded metal should be "fixed" to
the box with the filter opening designed so that the filters can slide
out for cleaning (like a oven rack). Do what you can to SEAL THE BOX to
make sure that the exhaust fan exhausts as much as possible. For the
"upper booth" I took a large cardboard box and cut it so I had two
sides, a back and a top. I placed this over the spray booth box.
Finally at the fan outlet I sealed it with a pillowcase to trap any
glaze that was missed by the filters. Any pottery that I spray is put
on a rotating table/wheel on top of the expanded metal base. I still use
a approved mask and spray about two/three coats of glaze for best
results. Then I get into shading. patterns, etc. This spray booth works
for me but no guarantees if it works for you as it does not have a high
negative airflow. That is one reason that it I only use low pressure and
flow spray guns. Sam in Daly City CA with FOG AGAIN. Comments
appreciated. Surely other potters have built better. Let's hear from
you.
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