Talbott on sat 22 nov 97
I just found out that Howard Axner has abandoned the idea of producing dies
for Venco Pugmills... The last time I spoke with him he was working on the
idea but- "no go"... so that is that.. A machine shop could probably make
them but you would need a barrell extension, taper, etc.. The pressure from
the pugmill auger may not be great enough to give good extrusions forces...
My suggestion.. just get a good extruder with dies... Less money and a lot
less hassel... Pugmills are for pugging and extruders are for dieing.. (did
I say that right?) ...Marshall
101 CLAYART MUGS
2ND ANNUAL CLAYARTERS' GALLERY - NAPLES, MAINE (Summer 1998)
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Vince Pitelka on sun 23 nov 97
At 08:25 PM 11/22/97 -0500, you wrote:
>----------------------------Original message----------------------------
>I just found out that Howard Axner has abandoned the idea of producing dies
>for Venco Pugmills... The last time I spoke with him he was working on the
>idea but- "no go"... so that is that.. A machine shop could probably make
>them but you would need a barrell extension, taper, etc.. The pressure from
>the pugmill auger may not be great enough to give good extrusions forces...
>My suggestion.. just get a good extruder with dies... Less money and a lot
>less hassel... Pugmills are for pugging and extruders are for dieing.. (did
>I say that right?) ...Marshall
This is not the issue. The problem is that a pugmill is not intended to
work with excessive restriction in the extrusion opening. Obviously, a
extruder operates at whatever speed you regulate the lever or pneumatic
cylinder. A pugmill does not have a variable speed motor, and if you place
excessive restriction on the output the clay becomes overheated and
overworked, and what comes out is doo-doo. If you are extruding something
like a brick, a large tube, or a wide slab, then there will be no problem.
- Vince
Vince Pitelka - vpitelka@DeKalb.net
Home 615/597-5376, work 615/597-6801, fax 615/597-6803
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Kathi LeSueur on tue 25 nov 97
<>
Actually, a de-airing pugmill can take away lots of the nightmares associated
with extruding. I wouldn't suggest anyone buy a pugmill in order to extrude,
but........ if you have one..... want one so you don't have to wedge
clay......... then a pugmill (at least the Bluebird) is very good at
extruding. Firmer clay can be extruded with the pugmill making it easier to
maintain the form extruded. The tearing of extrusions is usually eliminated,
and there is no end to how long..... with help....... an extrusion can be. I
just used the dies I got with my old "Super-dupper Clay Extruder". Place them
on the front of the barrel and attach with a little clay. Cut a piece of
plywood with a hole cut out a little larger than the extrusion and wide
enough to clamp or bolt over the die and onto the barrel. A hint: for small
extrusions get a roll of adding machine tape. Rig it so unwinds with the
extrusion.
I prefer to fabricate dies from plexiglas backed up by plywood. This works
especially well with the collar I had made to extrude large pieces. That
collar only cost $30 from my local welding shop. It's only drawback is that
it's not aluminum. Not a problem for me but maybe for others using white
clays.
If I'm only going to extrude a few pieces I use the hand extruder. But for
100 business card holders it's better and faster to use the pugmill.
Kathi LeSueur
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