Matt MacIntire on fri 23 mar 01
Louis wrote:
>> Some varieties of Granite Chicken Grit might start you
>> on your way. Available at feed stores, don't get it confused
>> with limestone or oyster shell grit.
Terrific! Granite Chicken Grit sounds promising. I'm in a fairly urban
area and I rarely see live chickens around here. But there are some places
not too far off that will have chicken supplies. Now that I know to search
for this, I also see that this stuff is sometimes used by nurseries when
they are starting seeds. I'll find some easy enough.
I will definitely try some grits.
Thank you, Louis.
Matt
Matt MacIntire on fri 23 mar 01
Does anyone know of a source for coarse, granular feldspar in the US?
I've always enjoyed the little white eruptions in Shigaraki ware. I've read
they are due to impurities of granular feldspar. The recent thread on
granular ilmenite reminded me to ask the list for a source.
I recently saw a pot made from a clay body that seemed to have granular
feldspar added. When I inquired, I heard the pot was contemporary work from
someone in Shigaraki. Perhaps they ground the feldspar locally, I don't
know.
I'm not a Pioneer Potter and I don't have a jaw crusher. I guess I've got a
hammer though... But I'd rather rely on UPS, and electronic discussion
lists.
Thanks in advance.
Matt
Louis Katz on fri 23 mar 01
Hi Matt
Some varieties of Granite Chicken Grit might start you on your way. Available at
feed stores, don't get it confused with limestone or oyster shell grit.
Turkey git is a bit big, starter grit a bit small.
I have purchased this stuff in a variety of locations and it definitely varies in
its melting temp.
Louis
Ababi on sat 24 mar 01
Hi!
Once, misinterpreting the basalt to grog, I added once about 20% to a
clayboby and fired to 1220C. I tell it you because of the interesting
results: The glaze almost melted away, ( I did not know that I added flux)
the ware became foamy. I believe, to anyone interested, some tests of adding
from 5 to 20% might give interesting results. probably decorative or
sculpture.
Ababi Sharon
ababisha@shoval.ardom.co.il
http://members4.clubphoto.com/ababi306910/
----- Original Message -----
From: "Louis Katz"
To:
Sent: Saturday, March 24, 2001 2:49 AM
Subject: Re: granular feldspar
> Hi Matt
> Some varieties of Granite Chicken Grit might start you on your way.
Available at
> feed stores, don't get it confused with limestone or oyster shell grit.
> Turkey git is a bit big, starter grit a bit small.
> I have purchased this stuff in a variety of locations and it definitely
varies in
> its melting temp.
> Louis
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
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>
Ababi on sat 24 mar 01
I live in a kibbutz. We have one of the biggest chiken house in Israel,
however we grow only chicks.
So I buy the baslt from my ceramics supplier. you may find it from companies
that make floore tiles, or sculptors supply.
Ababi
----- Original Message -----
From: "Matt MacIntire"
To:
Sent: Saturday, March 24, 2001 6:59 AM
Subject: Re: granular feldspar
> Louis wrote:
> >> Some varieties of Granite Chicken Grit might start you
> >> on your way. Available at feed stores, don't get it confused
> >> with limestone or oyster shell grit.
>
> Terrific! Granite Chicken Grit sounds promising. I'm in a fairly urban
> area and I rarely see live chickens around here. But there are some
places
> not too far off that will have chicken supplies. Now that I know to
search
> for this, I also see that this stuff is sometimes used by nurseries when
> they are starting seeds. I'll find some easy enough.
>
> I will definitely try some grits.
>
>
> Thank you, Louis.
>
> Matt
>
>
____________________________________________________________________________
__
> 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.
>
Hank Murrow on sat 24 mar 01
Matt wrote;
>Does anyone know of a source for coarse, granular feldspar in the US?
>
>I've always enjoyed the little white eruptions in Shigaraki ware. I've read
>they are due to impurities of granular feldspar. The recent thread on
>granular ilmenite reminded me to ask the list for a source.
>
>I recently saw a pot made from a clay body that seemed to have granular
>feldspar added. When I inquired, I heard the pot was contemporary work from
>someone in Shigaraki. Perhaps they ground the feldspar locally, I don't
>know.
>
>I'm not a Pioneer Potter and I don't have a jaw crusher. I guess I've got a
>hammer though... But I'd rather rely on UPS, and electronic discussion
>lists.
say Matt;
if you look in Ian Currie's book, "Revealing Glazes", you will find a pic
of his low volume crusher. It consists of a 3" diameter pipe with three or
four small welds at the bottom to raise the end of the pipe a 1/16" or more
above the surface one is crushing against(steel plate is great). A heavy
solid round stock acts as a hammer within the pipe. The effluent comes out
the slot at the bottom when it gets pounded small enough. $3 or five bucks
worth! Lots of spitouts for a few moments work.
Cheers, Hank in Eugene
Matt MacIntire on sat 24 mar 01
Ababi wrote:
>> Once, misinterpreting the basalt to grog, I added once about 20%
>> to a clayboby and fired to 1220C. I tell it you because of the
>> interesting results: The glaze almost melted away, ( I did not
>> know that I added flux) the ware became foamy.
Ababi, thank you for your message. It is always interesting to learn how
materials behave.
I once heard Paul Soldner say, "Watch your scrap pile." It seemed like good
advice.
Matt
Earl Brunner on sat 24 mar 01
I've also heard of crushing up Orton cones (say cone 8-9) and using them
for the effect. I would think that high fired ones might be a bit
hazardous with sharp edges, but you could may bisque some then bust them up.
Matt MacIntire wrote:
> Louis wrote:
>
>>> Some varieties of Granite Chicken Grit might start you
>>> on your way. Available at feed stores, don't get it confused
>>> with limestone or oyster shell grit.
>>
>
> Terrific! Granite Chicken Grit sounds promising. I'm in a fairly urban
> area and I rarely see live chickens around here. But there are some places
> not too far off that will have chicken supplies. Now that I know to search
> for this, I also see that this stuff is sometimes used by nurseries when
> they are starting seeds. I'll find some easy enough.
>
> I will definitely try some grits.
>
>
> Thank you, Louis.
>
> Matt
>
> ______________________________________________________________________________
> 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.
--
Earl Brunner
http://coyote.accessnv.com/bruec
mailto:bruec@anv.net
Karen Sullivan on sun 25 mar 01
Matt, I don't know what part of the country you
live in...but in California, there is a lot of granite...
which when crumbled and wedged into clay, fired to cone 10,
melts in beads that ooze out of the clay.
I also use sand...beach sand, construction sand, for
small bits that melt ...
Go to a hardware store and check out construction sand...
different stuff from the silica sand...less pure...
essentially a decomposed granite is feldspatic.
Any mountains near by, look for granite outcroppings,
with luck, granite slides, and fire the stuff in
small pinch pots to see if it melts. If so, wedge
it into your clay and it will look like Shigaraki stuff.
Good luck,
bamboo karen
on 3/23/01 12:02 PM, Matt MacIntire at MattM@INTERSOFTCORP.COM wrote:
> Does anyone know of a source for coarse, granular feldspar in the US?
>
> I've always enjoyed the little white eruptions in Shigaraki ware. I've read
> they are due to impurities of granular feldspar. The recent thread on
> granular ilmenite reminded me to ask the list for a source.
>
> I recently saw a pot made from a clay body that seemed to have granular
> feldspar added. When I inquired, I heard the pot was contemporary work from
> someone in Shigaraki. Perhaps they ground the feldspar locally, I don't
> know.
>
> I'm not a Pioneer Potter and I don't have a jaw crusher. I guess I've got a
> hammer though... But I'd rather rely on UPS, and electronic discussion
> lists.
>
> Thanks in advance.
>
>
> Matt
>
> ______________________________________________________________________________
> 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.
Cindy Strnad on sun 25 mar 01
"Custer Feldspar in South Dakota sells feldspar chips! Or you could grind
your own."
Actually, that would be the Pacer Corporation, 605-673-4419. As I remember,
they call the stuff moon rock or moon stone--something like that--and
deliver it locally by the truckload for people to use in their driveways. My
mom and dad got some. It's micaceous, and you end up with silver "glitter"
all through your house, but it is pretty.
I kind of doubt Pacer would be willing to ship off 50 lb. bags here and
there, but your clay supplier may be able to order some when they order
Custer spar.
Cindy Strnad
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
USA
earthenv@gwtc.net
http://www.earthenvesselssd.com
iandol on sun 25 mar 01
Dear Matt MacIntire,
The tool you are looking for is a Prospectors "Dolly Pot"
This is a one foot length of 4 inch dia by 1/4 inch steel pipe welded to =
a base plate about one inch thick. Then, to apply force a Tamper which =
has a head on it about two inches dia and a shank of hex bar inch across =
the flats, five or six feet long.
Go to a rock shop or troll the beach or quarry. Gets some cobbles and =
start to batter them to the size you need.
Half an hours work and I can reduce most rocks except Sillimanite to =
minus #200 with about 60% recovery.
If that is not possible. Fire some Felspar of your choice to sinter it =
and just break it up with a hammer.
Have fun,
Ivor
John Britt on sun 25 mar 01
Matt,
Custer Feldspar in South Dakota sells feldspar chips! Or you could grind
your own.
Good luck.
John Britt
Penland
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Matt MacIntire on mon 26 mar 01
John wrote:
>> Custer Feldspar in South Dakota sells feldspar chips!
Yippee! That is just what I was hoping to find. I didn't know Pacer sold
"chips." Pacer's "medium" size Feldspar chips pass 6 mesh but are larger
than 20 mesh. The "large" size chips are too big for pottery.
If anyone else is interested, here is a link to Pacer's data sheet for their
Feldspar chips:
http://www.pacerminerals.com/chips.html
Thanks John, for pointing that out. And thanks to everyone else who
responded with so many great suggestions.
Matt
Diane Echlin on mon 26 mar 01
I missed the first part of this thread, but if you are looking for granite to
include in clay or glazes, find a place that makes granite countertops. They are
more than willing to scoop up the "dust", which is actually sludge that needs to be
dried out to use, and throw it in a bucket for you. it is very fine grained. and
free.
Diane in CT
Matt MacIntire wrote:
> John wrote:
> >> Custer Feldspar in South Dakota sells feldspar chips!
>
> Yippee! That is just what I was hoping to find. I didn't know Pacer sold
> "chips." Pacer's "medium" size Feldspar chips pass 6 mesh but are larger
> than 20 mesh. The "large" size chips are too big for pottery.
>
> If anyone else is interested, here is a link to Pacer's data sheet for their
> Feldspar chips:
> http://www.pacerminerals.com/chips.html
>
> Thanks John, for pointing that out. And thanks to everyone else who
> responded with so many great suggestions.
>
> Matt
>
> ______________________________________________________________________________
> 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.
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