Priscilla Wilson and/or Janice Lymburner on sun 9 jul 00
Many thanks for the interesting and helpful answers about pumping slip!
Priscilla Wilson
Sautee, GA
-----Original Message-----
From: Donald Burroughs
To: CLAYART@LSV.CERAMICS.ORG
Date: Saturday, July 08, 2000 7:22 AM
Subject: Re: CHEAP ways to pump casting slip
> Dear Priscilla
>
> I used a shop vac when I first started slip casting in art
>school. It is effective, but only for limited castings, I would not suggest
>this method if you are planning production runs because you would probably
>burn out the motor rather quickly because the viscosity of the slip will
put
>tremendous strain on the bushings in the vac motor while sucking up large
>amounts of slip. The wet vac though is effective at eliminating any pooling
>of casting slip. It also is a handy process for casting with multi coloured
>slips in the same mould where layers of colour are desired in a piece- you
>pour slip carefully to a certain level with out splashing the upper wall of
>the mould- let set to form a wall- then vac the excess out- let this layer
>firm up, but not to the stage of release then pour the next coloured slip
et
>al.
>
>
> Donald Burroughs
>
>-----Original Message-----
>From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]On
>Behalf Of amy parker
>Sent: July 7, 2000 1:17 PM
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Re: CHEAP ways to pump casting slip
>
>
>Priscilla - I recently acquired a lot of slip-casting stuff from a friend
>whose mother did this for 35 years...one of the items was a "slip sink",
>which is almost identical to the cooler, but it is a lightweight fiberglass
>thing with a spigot so that you can shut it off. In order to drain the
>molds, you just upend them over the slip sink. There is supposed to be a
>slatted shelf on top of this but it has gotten lost over the years - I am
>using one of those extra-large cooling racks for cakes & cookies over it.
I
>never heard of pumping the slip back out of the molds, but I haven't done
>slipcasting in 30 years, so maybe times have changed! I know you can pump
it
>in, but I thought you had to turn them over & let them drain until the slip
>stopped running out, rather than trying to suck it dry. It is tough with
>the larger molds my kids want one each of!!! Giant piggy banks! (They can
>put on the glaze themselves! - summer projects.)
>
>I like the idea of the cooler because it has a lid - I turned my back on
the
>slip sink, which is outside, to cook dinner and came back to find a tiny
>bird mired up in it! We put it in the bird bath, literally, and it flopped
>around and rinsed off. Unfortunately, it did not survive. Poor Little
>Bird!!! I now have an improvised cover.
>
>I am in the Atlanta area and have access to hundreds of slip molds, most in
>very good to excellent condition, selling from $5 to $10 each, if you are
>interested.
>
>Amy
>
>At 11:56 PM 7/6/00 -0400, you wrote:
>>I'm trying to figure out a way to pump the slip out of my molds but am not
>ready/able to invest in one of those machines yet. I tried a portable oil
>pump without success. Has anybody tried a shop-vac? I'm thinking of trying
>it with PVC pipe and/or some kind of smooth, flexible hose instead of the
>corrugated hose. Any better/additional ideas would be appreciated!
>>
>>In case anyone else is slipcasting on a shoestring, I've hit on a pretty
>good and easy way to store and dispense the slip - an old Igloo cooler with
>spout at the bottom for draining off liquid!
>>
>>Thanks-
>>Priscilla Wilson
>amy parker Lithonia, GA
>amyp@sd-software.com
>
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>___________________________________________________________________________
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>
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