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advice to a first-time slip caster

updated thu 1 feb 07

 

Timothy Joko-Veltman on tue 30 jan 07


In the thread a while ago about what we wanted to learn this year, I
said I wanted to learn slip casting.

I've gone through all my books (and some borrowed ones as well), but
was wondering if the experienced casters out there had any advice for
someone who's never done it before.

Regards,

Tim

stephani stephenson on tue 30 jan 07


Tim, maybe this is too broad, but then the question
was pretty broad too!

1.start simple, ( with a fairly straightforward shape
and 2 piece mold.)
2.follow directions with regard to
mold making
slip making
plaster mixing

get everything ready and in place beforehand
a few goofs the first couple times around are ...not
unheard of!

write the list with specific questions as you
encounter them.

p.s. if you can, make or mix your slip well ahead of
time ,so it can age a few weeks at minimun...more
aging, better....

have fun
Stephani Stephenson



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Eleanora Eden on tue 30 jan 07


Hi Tim,

I would add the recommendation that you keep careful logs
of all the casting times. Over time you will be able to refine the
timing of each casting so that you are happiest with the piece.

A good starting time is about 40 minutes to let the casting slip
stay in the mold before pouring out. You can cut across the top edge
of the thickening wall and see how thick it has gotten.

You will want to become friends with your hydrometer. Be sure
to make a record of the hydrometer readings and whether adding
water or deflocculant or a combination of both gets you to where
your reading is right.

Buying ready made casting slip is a nice way to begin. It is cheap
and gets you moving. Know that it almost always doesn't come out
of the box perfect, it may still need deflocculant and/or water.

Darvan 7 is the deflocculant that is easiest to use in my estimation.
I dilute it with water about 1-3 so it is easier to add
only a few drops. A little goes a very long way.

Eleanora
--
Bellows Falls Vermont
www.eleanoraeden.com

Timothy Joko-Veltman on wed 31 jan 07


Stefani, Eleanora,

Thanks for your very helpful input.

Regards,

Tim