Hank Murrow on wed 9 jun 04
On Jun 9, 2004, at 12:05 PM, Brad Carter wrote:
> I would like to make large columar forms, and also large tappered
> cones and
> obelisk forms. I am thinking 5-6 feet high and 8-10 inches diameter
> at the
> base and 3-4 inches diameter at the top. Can anyone give me a quick
> overview
Dear Brad;
Nils Lou built an air operated extruder that made human scale forms of
a dimension that you want. His extruder is pictured in one of the
extruder books, but I cannot remember which one.
Cheers, Hank
www.murrow.biz/hank
Brad Carter on wed 9 jun 04
I would like to make large columar forms, and also large tappered cones and
obelisk forms. I am thinking 5-6 feet high and 8-10 inches diameter at the
base and 3-4 inches diameter at the top. Can anyone give me a quick overview
of the technical challenges I will face? Does anyone have experience
constructing, bisque firing, applying glaze to and glaze firing forms like this? I
am wondering if a really big extruder could extrude a column of 5-6 feet high?
And could the extruder die be somehow modified so that it decreased in
diameter at a controled rate during the extrusion, resulting in a cone or tappeded
box form? Also, can anyone refer me to any really good books, videos or
workshops (preferably on the West Coast) on extrusion ceramics.
I know I am asking for a lot of information here. I am considering setting
up a studio from scratch and I am primarily interested in creating lage-size
patio pots, garden sculpture and possibly crystalline-glazed pottery.
Brad Carter
Grass Valley, Cailfornia
Ivor and Olive Lewis on thu 10 jun 04
Dear Brad Carter,
Extrusions this size were made in factories that manufactured Salt
Glazed Drain Pipes. But they were always parallel sided.
There is a company in the North of England which is still using this
sort of equipment. I recall they are in a village called Haydon Bridge
in Northumberland, west of Hexham.
Best regards,
Ivor Lewis. Redhill, South Australia
Potters Council Member
pdp1@EARTHLINK.NET on thu 10 jun 04
Hi Andrew,
While a 'pug' of that size would be expensive, and Extruder
whose pistopne-cylinder is of a yard's widh and some yards
long, would not be especially expensive to make, if one had
some practice in machanical matters, in obtaining materials,
and in fabrication.
Phil
el ve
----- Original Message -----
From:
> Hi Brad,
>
> The biggest extrusions Ive known were 32 inches diameter
and a number of
> yards in length.
>
> Used in the production of electrical insulators I seem to
remember one of
> the manufacturers was working on extruding tapered columns
but I forget
> the details.
>
> You might try getting in contact with some of the
manufacturers. Buying
> your own pug of such I size would be very expensive.
>
> Regards,
>
> Andrew
>
>
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Laurie Kneppel on thu 10 jun 04
Gladding, McBean terra cotta factory in Lincoln, CA manufactures
extruded clay sewer pipe up to 42" in diameter. Not sure what the
maximum length is. Didn't get to see the extruders on the tour.
Laurie
Sacramento, CA
rockyraku.com
Potters Council, member
Sacramento Potters Group, member
mailtoandrew@FSMAIL.NET on thu 10 jun 04
Hi Brad,
The biggest extrusions Ive known were 32 inches diameter and a number of
yards in length.
Used in the production of electrical insulators I seem to remember one of
the manufacturers was working on extruding tapered columns but I forget
the details.
You might try getting in contact with some of the manufacturers. Buying
your own pug of such I size would be very expensive.
Regards,
Andrew
claybair on tue 9 aug 05
I have a friend with arthritis who swears by her
North Star Big Blue extruder. It takes a 25lb bag
into it.... it does help to have more than one person
around. Once the clay was in there it was a piece of
cake/clay! We made some large extruded pieces during
a studio tour. We twisted the clay slightly and made some
great teapots and pitchers. The clay extruded very easily.
I found the big wheel made the process very easy and smooth.
The most trouble we had was during assembly
getting the cotter pin in place. It was hard to reach and we had to
fiddle with it to get it to fit in. We struggled for 10 minutes trying to
get it in there.
I would get one of them when I'm ready for it. Right now I'm salivating over
de airing pug mills. I almost had my hands on one last winter.
Gayle Bair
Bainbridge Island, WA
Tucson, AZ
http://claybair.com
-----Original Message-----
From: Gene Arnold
Due to back problems I have been using my extruder more than my wheels
lately. The work that I make with the extruder is selling very well. I
didn't really realize the many things that could be produced on an extruder.
Amazing how something's take a turn isn't it??
So back to the question. I have a North Star wall mounted extruder with a 4
inch barrel. The North Star works well for it's size but I find myself
loading clay into the extruder more than working (not playing) on my art.
I plan to purchase a larger extruder with about a 25lb. capacity. Right now
I really like the looks of the Bailey air operated extruder. Does anyone use
one of these they would be willing to give some feed back on?? Or is there
another machine that y'all like better??? I plan to keep my North Star for
smaller work.
Thanks for any help????
Gene & Latonna
mudduck@mudduckpottery.com
www.mudduckpottery.com
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Gene Arnold on tue 9 aug 05
Due to back problems I have been using my extruder more than my wheels
lately. The work that I make with the extruder is selling very well. I
didn't really realize the many things that could be produced on an extruder.
Amazing how something's take a turn isn't it??
So back to the question. I have a North Star wall mounted extruder with a 4
inch barrel. The North Star works well for it's size but I find myself
loading clay into the extruder more than working (not playing) on my art.
I plan to purchase a larger extruder with about a 25lb. capacity. Right now
I really like the looks of the Bailey air operated extruder. Does anyone use
one of these they would be willing to give some feed back on?? Or is there
another machine that y'all like better??? I plan to keep my North Star for
smaller work.
Thanks for any help????
Gene & Latonna
mudduck@mudduckpottery.com
www.mudduckpottery.com
Gordon Ward on wed 10 aug 05
I had back problems that led me into handbuilding. I love it when an
adverse situation reveals new opportunities.
I have used an old, mid 70s model Bluebird pugmill for horizontal
extrusions. It was before they made de-airing machines. There are
some obvious limitations with going horizontal, but made a variety of
flat shapes with a custom nozzle. I also made some hollow forms by
welding a devise inside the standard cone nozzle, which would accept
some central bolts. A friend on mine used to make hollow forms with a
later model small bluebird pugmill by setting the thing up on an
incline. Anyway, with a pugmill you get lots of continuous extrusion
in very little time. There is one pugmill that is designed to run
horizontally or vertically made in NZ by Talisman. Not sure if it
would serve your specific needs:
http://www.talismansieve.co.nz/pugmill.html
Good luck and happy extruding,
Gordon
On Aug 9, 2005, at 2:54 PM, Gene Arnold wrote:
> Due to back problems I have been using my extruder more than my wheels
> lately. The work that I make with the extruder is selling very well. I
> didn't really realize the many things that could be produced on an
> extruder.
> Amazing how something's take a turn isn't it??
>
> So back to the question. I have a North Star wall mounted extruder
> with a 4
> inch barrel. The North Star works well for it's size but I find myself
> loading clay into the extruder more than working (not playing) on my
> art.
>
> I plan to purchase a larger extruder with about a 25lb. capacity.
> Right now
> I really like the looks of the Bailey air operated extruder. Does
> anyone use
> one of these they would be willing to give some feed back on?? Or is
> there
> another machine that y'all like better??? I plan to keep my North Star
> for
> smaller work.
>
> Thanks for any help????
>
>
> Gene & Latonna
> mudduck@mudduckpottery.com
> www.mudduckpottery.com
>
> _______________________________________________________________________
> _______
> 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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