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cracks in jewelery

updated mon 14 feb 11

 

logan johnson on sun 13 feb 11


Hey Marci ,
Here's an idea you might want to try.=3DA0 Get some window screen, my choic=
e =3D
would be the fiberglass not the metal stuff.=3DA0 Then=3DA0 get an embroide=
ry h=3D
oop.
put the screen in the hoop like you normally would with fabric. This is why=
=3D
I suggest the fiberglass it's soft & flexible.=3DA0 then put your hoop in =
th=3D
e pizza box screen side up off the cardboard & put the pendants=3DA0 on the=
s=3D
creen. This should allow air to get to the bottom of the clay as well as th=
=3D
e top.=3DA0 Just so you know I've never used this method=3DA0 but if you wa=
nt t=3D
o get air to the bottom of a piece as well as the top this seemed to be an =
=3D
inexpensive & easy way to do that.
Hope this helps,
Logan

Logan Johnson Yakima Valley Pottery & Supply 719 W Nob Hill Blvd. Ste C =
=3D
Yakima, WA 98902 509.469.6966 =3DA0www.audeostudios.com "Carpe Argill=
am=3D
!!"

--- On Sun, 2/13/11, marci Boskie's Mama =3D3D^..^=3D3D wr=
ote:

From: marci Boskie's Mama =3D3D^..^=3D3D
Subject: Re: cracks not on handles
To: Clayart@LSV.CERAMICS.ORG
Date: Sunday, February 13, 2011, 8:25 AM

Speakingof cracks on handles, I have an odd issue with some of my
jewelry pieces:
I use Laguna frost cone 6 porcelain, rolled very thin with a rolling
pin into an oval-y=3DA0 shape, then I flip the top edge over so that it
forms a loop that a chain can be run through . I stack them in pizza
boxes to dry ...
The odd thing is that some of them will develop a crack right in
the center of the=3DA0 part where it loops over , not where the end of
the loop over attachs to the body . ( I use a small amount if slurry
to attach ) ( Picture a taco=3DA0 where instead of folding it in half,
you roll one edge over to only=3DA0 about 1/5 of the way down and attach
the rolled over part=3DA0 to the body=3DA0 of the taco ...Thats sorta what
they look like=3DA0 and the crack forms right at the top edge of where
the taco is rolled over=3DA0 ) ...
=3DA0 The thing is: If cracks form because of variations in dampness,
whats going on here? I=3DA0 do the roll over as soon as I=3DA0 get the clay
rolled to the desired thinness, and its the same piece of clay so Im
not attaching things=3DA0 that are different degrees of dry... and it
doesnt happen on all of them ... some turn out just fine ..
Would covering them with plastic help? Would=3DA0 the act of laying
them out on cardboard be enough to draw more moisture out of the body
of the piece , leaving the roll-over part just wet enough to crack? (
These are VERY thin )
Marci the baffled chinapainter