Ben Owen on tue 27 jun 00
I have been looking through the Archives for info on pugmills in
particular for use with porcelain or white stoneware clays with no sand
or grog. I currently use a Venco 4" model to repug Lagunas b-mix clay
to make it fresh to throw. During the process of repugging , the clay
will stop up the air slot in the vacum chamber in the middle of pugging
only 25 lbs of clay. This gets irritating! I read the venco manual on
using porcelain clay and it said to tape the top 1/3 of the screen in
the pugmill. I did this and it still plugs up the deairing chamber as
well as the clay when it comes out has some air pockets. I have talked
to several dealers about the problem and some have said the Bluebird
Powerstar works better for porcelain as well as the VanHo model. Other
have suggested the New Peter Pugger with the deairing chamber would
work. I like my venco. I have two of them at 4" size. One for
stoneware which works great and the other for the porcelain. If anyone
has advice I would greatly appreciate it.
Ben Owen III
Ben Owen on thu 29 jun 00
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Craig Martell wrote:
> Hello Ben:
>
> I use a 4" Venco for porcelain and I don't have this problem, ever. I'm
> thinking that it could be a problem with b mix. I haven't worked with this
> body much but I do remember that it's kind of sticky and very dense. The
> clay is feeding into the deairing section of the mill faster than it can
> exit thru the nozzle and the excess is taking the path of least resistance
> into the deairing chamber, under the guage plate. I know I'm probably
> telling you stuff that you already know.
>
> You might want to check the screens and make sure that your tape is still
> intact. Also, when I've had to block the screens, I've used hard plastic
> rectangles to insure that the screen stays blocked. I have a vac pump
> that's hell on wheels now so I don't have to do this. Anyway, you might
> try blocking a bit more of the shredding screen and feeding the clay in
> just a bit slower. This may help. If it doesn't, you might try running
> the clay a bit stiffer as this makes it exit a little faster.
>
> regards, Craig Martell in Oregon
>
> ______________________________________________________________________________
> 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/
>
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Subject: Re: pugmills for porcelain
Date: Thu, 29 Jun 2000 18:19:27 -0700
From: Ben Owen
To: Ceramic Arts Discussion List
Dear Craig,
Thanks for your note regarding the pugmill problem. I cleaned out both of my
pugmills and tried them with the opposite clays and it worked a little better. I
taped up the screen about an in more to 3 inches total and it helped. I have
found that softer clay will stop it up easier than stiffer clay. I like stiffer
clay most of the time anyway. I am satisfied with how it works now. I would have
thought that taping up the screens more would slow down the flow of clay but it
didn't change very much. I like the vencos better than my experience with the
Bluebirds. Thanks again.
Ben Owen III
Craig Martell wrote:
> Hello Ben:
>
> I use a 4" Venco for porcelain and I don't have this problem, ever. I'm
> thinking that it could be a problem with b mix. I haven't worked with this
> body much but I do remember that it's kind of sticky and very dense. The
> clay is feeding into the deairing section of the mill faster than it can
> exit thru the nozzle and the excess is taking the path of least resistance
> into the deairing chamber, under the guage plate. I know I'm probably
> telling you stuff that you already know.
>
> You might want to check the screens and make sure that your tape is still
> intact. Also, when I've had to block the screens, I've used hard plastic
> rectangles to insure that the screen stays blocked. I have a vac pump
> that's hell on wheels now so I don't have to do this. Anyway, you might
> try blocking a bit more of the shredding screen and feeding the clay in
> just a bit slower. This may help. If it doesn't, you might try running
> the clay a bit stiffer as this makes it exit a little faster.
>
> regards, Craig Martell in Oregon
>
> ______________________________________________________________________________
> 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.
--------------03EE11B40942BC820E40096F--
Craig Martell on thu 29 jun 00
Hello Ben:
I use a 4" Venco for porcelain and I don't have this problem, ever. I'm
thinking that it could be a problem with b mix. I haven't worked with this
body much but I do remember that it's kind of sticky and very dense. The
clay is feeding into the deairing section of the mill faster than it can
exit thru the nozzle and the excess is taking the path of least resistance
into the deairing chamber, under the guage plate. I know I'm probably
telling you stuff that you already know.
You might want to check the screens and make sure that your tape is still
intact. Also, when I've had to block the screens, I've used hard plastic
rectangles to insure that the screen stays blocked. I have a vac pump
that's hell on wheels now so I don't have to do this. Anyway, you might
try blocking a bit more of the shredding screen and feeding the clay in
just a bit slower. This may help. If it doesn't, you might try running
the clay a bit stiffer as this makes it exit a little faster.
regards, Craig Martell in Oregon
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