Gordon Ward on sat 17 jan 04
Several years ago I built a pair of sea kayaks and I wanted some bilge
pumps with a fair amount of volume. The principle in the design of a
bilge pump gave me the idea for the glaze jet. Here's how to make
your own.
It's a delightfully simple tool for glazing tall narrow forms. The heart of
it is a one way valve at the lower end which will let glaze in, but the only
way for glaze to go out is straight up a smaller tube. The other part is
a vertical tube with a plunger. This does the pulling and pushing of
the glaze.
I build mine from 1.5" PVC plastic pipe. You will need one cap, one el
and one reducing tee to fit 1.5" PVC pipe. This tee reduces to a 1/2"
female thread. This tee is the part you make the "foot valve" out of. On
one end of the tee you will glue a disc of 1/4" plastic which will have
drilled in it a series of 3/8" holes. You will need to leave room to rivet
or screw a rubber flap, which is circular, and will cover the holes from
the inside. The flap can hinge from the center or the edge. I like the
edge best. From the 12" threaded hole you will need a fitting which
goes from threaded to a polyethylene riser. These are irrigation items.
O.K. , that's the heart of the critter. You can now make the plunger
section. Use a piece of 1/4" stainless rod and put a bend in one end
for the handle. Drill a 1/4" hole in the middle of the cap and poke the
rod through. Now make a small disc of plastic or aluminum which
slides easily inside a piece if the 1.5" pipe. Drill a 1/4" hole in the
center of the disc. Use a pair of small shaft collars to hold the disc at
the bottom of the shaft.
That's about it. Don't glue it together because you will want to be able
to take it apart for cleaning. You can size it to fit any glaze bucket.
There's a photo of one at http://www.tools4clay.com
Happy glazing!
Gordon
P.S. I use a glaze jet for my vases:
http://gordward.home.mindspring.com/
Gordon Ward on sat 17 jan 04
Oops: correction: In the middle of the 3rd paragraph - Instead of "From the
12" threaded hole", should be "the 1/2" threaded hole"...
> From: Gordon Ward
> Reply-To: Clayart
> Date: Sat, 17 Jan 2004 11:10:49 -0500
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: build your own glaze jet
>
> Several years ago I built a pair of sea kayaks and I wanted some bilge
> pumps with a fair amount of volume. The principle in the design of a
> bilge pump gave me the idea for the glaze jet. Here's how to make
> your own.
>
> It's a delightfully simple tool for glazing tall narrow forms. The heart of
> it is a one way valve at the lower end which will let glaze in, but the only
> way for glaze to go out is straight up a smaller tube. The other part is
> a vertical tube with a plunger. This does the pulling and pushing of
> the glaze.
>
> I build mine from 1.5" PVC plastic pipe. You will need one cap, one el
> and one reducing tee to fit 1.5" PVC pipe. This tee reduces to a 1/2"
> female thread. This tee is the part you make the "foot valve" out of. On
> one end of the tee you will glue a disc of 1/4" plastic which will have
> drilled in it a series of 3/8" holes. You will need to leave room to rivet
> or screw a rubber flap, which is circular, and will cover the holes from
> the inside. The flap can hinge from the center or the edge. I like the
> edge best. From the 12" threaded hole you will need a fitting which
> goes from threaded to a polyethylene riser. These are irrigation items.
> O.K. , that's the heart of the critter. You can now make the plunger
> section. Use a piece of 1/4" stainless rod and put a bend in one end
> for the handle. Drill a 1/4" hole in the middle of the cap and poke the
> rod through. Now make a small disc of plastic or aluminum which
> slides easily inside a piece if the 1.5" pipe. Drill a 1/4" hole in the
> center of the disc. Use a pair of small shaft collars to hold the disc at
> the bottom of the shaft.
>
> That's about it. Don't glue it together because you will want to be able
> to take it apart for cleaning. You can size it to fit any glaze bucket.
> There's a photo of one at http://www.tools4clay.com
>
> Happy glazing!
>
> Gordon
>
> P.S. I use a glaze jet for my vases:
> http://gordward.home.mindspring.com/
>
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