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two questions: shellac, cmc

updated sat 15 oct 05

 

Linda Blossom on fri 7 oct 05


Hi Lili,

Shellac would be the best for the raised designs as it will stand up to the
wiping. Cmc, a gum, is a component of veegum cer which also contains
bentonite. I use either for my glazes to make them stronger when dry and
because I single fire.

Linda
Ithaca, NY


Subject: two questions: shellac, CMC

I want to experiment with making raised designs using a resist and then
sponging off surrounding clay. On Clayart both shellac and wax resist have
been mentioned as the proper resist for this purpose. What, which is the
better--I have both.

CMC and V-Gum.. I know they are not the same. Again what is the
difference in use?
pots@pclink.com.

Lili Krakowski on fri 7 oct 05


I want to experiment with making raised designs using a resist and then
sponging off surrounding clay. On Clayart both shellac and wax resist have
been mentioned as the proper resist for this purpose. What, which is the
better--I have both.

CMC and V-Gum.. I know they are not the same. Again what is the
difference in use?

what a joy that after 52 years in clay I still can learn so much. What a
joy that Clayart is there to teach me.
Lili Krakowski

Be of good courage

Heloisa Nunes on fri 7 oct 05


Lilli,
I have only used shellac for making raised designs, and I like it very much
because it is more fluid and it dryies very fast.
I have done free brushwork by putting the piece on a wheel, and splashing
with a very thick round brush from about 2 feet away. It gives nice free
flowing splashes.
I have also written H2O on a water bottle.
Best of luck,
Heloisa Nunes,
Sao Paulo, Brazil


----- Original Message -----
From: "Lili Krakowski"
To:
Sent: Friday, October 07, 2005 10:46 AM
Subject: *VERIF.SPAM*(5.5)*(5.5)* two questions: shellac, CMC


>I want to experiment with making raised designs using a resist and then
> sponging off surrounding clay. On Clayart both shellac and wax resist
> have
> been mentioned as the proper resist for this purpose. What, which is the
> better--I have both.
>
> CMC and V-Gum.. I know they are not the same. Again what is the
> difference in use?
>
> what a joy that after 52 years in clay I still can learn so much. What a
> joy that Clayart is there to teach me.
> Lili Krakowski
>
> Be of good courage
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>

Rose Bauer on fri 7 oct 05


Hi Lili,

IMHO, shellac would be the material of choice. I've not used wax resist
for this technique however I think wax resist would smear during the
eroding process.

I have also found that all shellac is not created equal or rather some has
a better resist/erode quality than others. I use a product called Orange
Flake Shellac by PRO-CRAFT. It is available in most lapidary supply stores
as it is widely used in the jewelry making process to hold objects to be
engraved or chased. I brush it on leather hard work and allow it to dry
overnight before sponging. It provides a very hard resist surface. I have
used this method when using terra sig over a heavily grogged clay body...
ie: raku clay... the resist is applied over the terra sig, protecting the
very smooth surface of the sig while the sponging removes the fines from
the heavily grogged clay leaving a very gritty surface. Nice relief, nice
contrast in suface texture. Makes for some very interesting results.

Cheers
Rose Bauer

... in the shadow of the Canadian Rockies
http://www.flickr.com/photos/tumblestack/

On Fri, 7 Oct 2005 09:46:47 -0400, Lili Krakowski
wrote:

>I want to experiment with making raised designs using a resist and then
>sponging off surrounding clay. On Clayart both shellac and wax resist
have
>been mentioned as the proper resist for this purpose. What, which is the
>better--I have both.
>
>CMC and V-Gum.. I know they are not the same. Again what is the
>difference in use?
>
>what a joy that after 52 years in clay I still can learn so much. What a
>joy that Clayart is there to teach me.
>Lili Krakowski
>
>Be of good courage
>
>__________________________________________________________________________
____
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.

Rose Bauer on fri 7 oct 05


Hi Lili,

Should you decide to use the Orange Flake Shellac, the hardened flakes
need to be dissolved in isopropyl alcohol. I put the alcohol and shellac
flakes into a jar with a tight fitting lid and shake until the flakes
soften and disolve into the alcohol. Takes as while as the flakes really
are quite hard. I don't use a set alcohol/flakes ratio, but look to make a
solution that is a deep rust color. Lidded, the solution lasts a long
time... just give the jar a good shake before use.

cheers
Rose Bauer




On Fri, 7 Oct 2005 09:46:47 -0400, Lili Krakowski
wrote:

>I want to experiment with making raised designs using a resist and then
>sponging off surrounding clay. On Clayart both shellac and wax resist
have
>been mentioned as the proper resist for this purpose. What, which is the
>better--I have both.
>
>CMC and V-Gum.. I know they are not the same. Again what is the
>difference in use?
>
>what a joy that after 52 years in clay I still can learn so much. What a
>joy that Clayart is there to teach me.
>Lili Krakowski
>
>Be of good courage
>
>__________________________________________________________________________
____
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.

Kendall deaton on thu 13 oct 05



I have used both shellac and wax and did not care for either. Shellac smells bad, has very little body and is hard to clean out of brushes and I found cold wax took a long time to and also did not brush very well. I ended up trying acrylic painting medium and found it performed very well. The "fluid" variety has nice body and affords good control, it dries quickly, resists well and cleans up with soap and water.


Kendall