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extruder expansion box

updated tue 29 may 07

 

Anne-Marie Yerks on mon 28 may 07


Hi Everyone,

I have just joined the list & hope I'm doing this right.

Anyway, I just bought a used Bailey extruder -- it's a standard 9-inch
model. I'm normally a wheel person, but this was such a good deal I couldn't
resist. However, in ten years of clay-working, I've only used an extruder
once before so I'm a real beginner in this arena.

My boyfriend mounted it to the wall in my studio and so now it's this big
mammoth thing in there. I finally used it the other day and while I love the
big square pot that resulted, I'm a little concerned about something: The
extruder has an expansion box and it holds LOTS of clay.

Here's what happened: I put 25 pounds into the extruder and it took about
ten or fifteen plunges just to get the extrusion started. The one extrusion
I made is only about five pounds at the most. The remaining 20 lbs was
neatly compressed into the expansion box -- a tight brick of clay that took
me a good hour to clean out.

Has something gone wrong here? And, if not, is there an easier way to get
the compressed clay out of the expansion box? I was literally grabbing
handfuls and yanking it out. Any advice appreciated.

BTW, I bought the book "Extruded Ceramics" and it's excellent!

Thanks,

Anne-Marie
Ferndale, MI

Marcia Selsor on mon 28 may 07


I had one of those expansion boxes for decades. I discarded it when I
moved and kept the small part.
At the Potters Council Extrudaganza conference, Bill Shimm (may have
the name misspelled)
put some 2 x 4 s in the ex[ansion box where the clay was not needed.
Brilliant.
I plan to use my pug mill for large extrusions rather than an
expansion box..but If I still have the expansion box, I would npow
know how to use it more efficiantly.
Marcia Selsor
http://marciaselsor.com



On May 28, 2007, at 9:32 AM, Anne-Marie Yerks wrote:

> Hi Everyone,
>
> I have just joined the list & hope I'm doing this right.
>
> Anyway, I just bought a used Bailey extruder -- it's a standard 9-inch
> model. I'm normally a wheel person, but this was such a good deal I
> couldn't
> resist. However, in ten years of clay-working, I've only used an
> extruder
> once before so I'm a real beginner in this arena.
>
> My boyfriend mounted it to the wall in my studio and so now it's
> this big
> mammoth thing in there. I finally used it the other day and while I
> love the
> big square pot that resulted, I'm a little concerned about
> something: The
> extruder has an expansion box and it holds LOTS of clay.
>
> Here's what happened: I put 25 pounds into the extruder and it took
> about
> ten or fifteen plunges just to get the extrusion started. The one
> extrusion
> I made is only about five pounds at the most. The remaining 20 lbs was
> neatly compressed into the expansion box -- a tight brick of clay
> that took
> me a good hour to clean out.
>
> Has something gone wrong here? And, if not, is there an easier way
> to get
> the compressed clay out of the expansion box? I was literally grabbing
> handfuls and yanking it out. Any advice appreciated.
>
> BTW, I bought the book "Extruded Ceramics" and it's excellent!
>
> Thanks,
>
> Anne-Marie
> Ferndale, MI
>
> __
Marcia Selsor
http://marciaselsor.com

lloyd wilson on mon 28 may 07


no, nothing wrong with your extruder.  get your handyman boyfriend to build you a wooden form to fit inside the expansion box, 2x4s work, just as deep but not so wide that it will impede the flow of clay thru the die.  this will make cleanup much easier.  idea came from experts at the ft. worth clayart symposium earlier this year.Kent Wilson



>Anyway, I just bought a used Bailey extruder -- it's a standard 9-inch
>model. I'm normally a wheel person, but this was such a good deal I couldn't
>resist. However, in ten years of clay-working, I've only used an extruder
>once before so I'm a real beginner in this arena.
>
>My boyfriend mounted it to the wall in my studio and so now it's this big
>mammoth thing in there. I finally used it the other day and while I love the
>big square pot that resulted, I'm a little concerned about something: The
>extruder has an expansion box and it holds LOTS of clay.
>
>Here's what happened: I put 25 pounds into the extruder and it took about
>ten or fifteen plunges just to get the extrusion started. The one extrusion
>I made is only about five pounds at the
most. The remaining 20 lbs was
>neatly compressed into the expansion box -- a tight brick of clay that took
>me a good hour to clean out.
>
>Has something gone wrong here? And, if not, is there an easier way to get
>the compressed clay out of the expansion box? I was literally grabbing
>handfuls and yanking it out. Any advice appreciated.
>
>BTW, I bought the book "Extruded Ceramics" and it's excellent!
>
>Thanks,
>
>Anne-Marie
>Ferndale, MI
>
>______________________________________________________________________________
>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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Bryan Johnson on mon 28 may 07


Re: Filling up the expansion box area.
I cut some 1/2"plywood pieces that have holes that are the right size to
hold dies from other extruders. Several with an angle cut and increasing
in size of the opening could be used to fill the space and work with a
variety of size die openings.

Bryan Johnson
>

Larry Kruzan on mon 28 may 07


Hi Ann-Marie,

Welcome to the group! In addition to filling the expansion box with wood
when you do not need the volume - spray everything with WD40 before putting
clay into the extruder. The die, the box, the chamber, even the plunger -
when cleanup time comes everything just slides out. Others suggested olive
oil or spray Pam but I did not like those as much. WD40 has a strong oder
and some folks may not like it but I prefer it to hours of cleanup. Yuck!!!

Best Wishes,
Larry Kruzan
Lost Creek Pottery

-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Anne-Marie
Yerks
Sent: Monday, May 28, 2007 9:33 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: [CLAYART] Extruder Expansion Box

Hi Everyone,

I have just joined the list & hope I'm doing this right.

Anyway, I just bought a used Bailey extruder -- it's a standard 9-inch
model. I'm normally a wheel person, but this was such a good deal I couldn't
resist. However, in ten years of clay-working, I've only used an extruder
once before so I'm a real beginner in this arena.

My boyfriend mounted it to the wall in my studio and so now it's this big
mammoth thing in there. I finally used it the other day and while I love the
big square pot that resulted, I'm a little concerned about something: The
extruder has an expansion box and it holds LOTS of clay.

Here's what happened: I put 25 pounds into the extruder and it took about
ten or fifteen plunges just to get the extrusion started. The one extrusion
I made is only about five pounds at the most. The remaining 20 lbs was
neatly compressed into the expansion box -- a tight brick of clay that took
me a good hour to clean out.

Has something gone wrong here? And, if not, is there an easier way to get
the compressed clay out of the expansion box? I was literally grabbing
handfuls and yanking it out. Any advice appreciated.

BTW, I bought the book "Extruded Ceramics" and it's excellent!

Thanks,

Anne-Marie
Ferndale, MI

____________________________________________________________________________
__
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.