David Hendley on sun 25 jun 00
Hey David, I'm considering building a hydraulic extruder
and would be interested in hearing how you like working
with yours. I'm sending this to Clayart, since there may
be some others interested.
A few questions, if you don't mind:
Do you use a hand pump, or motorized? I'm thinking a
hand pump might be too slow, but a motor might be
too fast and hard to control.
Do you have a two-way cylinder that will retract as
well as extrude? If not, how do you remove the
plunger after extruding?
Is there much 'lag time'; does clay continue to come
out after you have stopped the cylinder?
I agree with your advice to Anji about extruder installation;
attach the post to the floor and the ceiling and it will be
plenty strong. No need for concrete really; concrete anchors
on the floor and bolts to the ceiling joists are adequate.
--
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com/
----- Original Message -----
From: David McDonald
To:
Sent: Friday, June 23, 2000 4:54 PM
Subject: Re: Extruder Instalation
| Anji,
| Depending on how high the ceiling in your workspace is, you may
consider
| attaching your post to a ceiling member on the top, and to the floor on
| the bottom. With the 4" x 6" post you mentioned, there should be no need
| to fasten it to the wall too. Just make sure that you have the post
| bolted, or bracketed well, top and bottom. If you're still worried about
| the chance of it not being strong enough, you could ask a
| carpenter/builder friend to take a look at it for you, and get some
| reassurance.
| About 15 years ago, I built a hydraulic extruder using salvaged
steel,
| and a hydraulic cylinder from a Boeing aircraft landing gear, also
| salvaged. It's quite a workhorse, and will squirt clay out with some
| force. When I first installed it on the wall, I was concerned about all
| that power somehow pulling it off the wall, but such was not the case. I
| guess I fastened it well enough.
| Good luck! David
|
| On Thu, 22 Jun 2000 12:37:21 -0700 Anji Henderson
| writes:
| > Hello all ...
| >
| > I have acquired an extruder lately, and have a bit of
| > a dilemma...
| >
| > My studio is in my basement that I spent the last two
| > years fixing leaks.. Actually I better say chasing
| > leaks around the basement.. That is under control..
| > But, now I have an extruder to install..
| >
| > I am thinking of making a base with poured concrete
| > and setting a post (probably 6X4) into it and having
| > the extruder attached to the post.. I am not any where
| > daring enough to drill into the wall's .. I can just
| > see it now, self cleaning extruder when it rains..
| >
| > So does the installation plan seem logical?? Or does
| > anyone have a better way to install this??
| >
| > Anji
| >
| > __________________________________________________
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| > http://im.yahoo.com/
| >
| >
| _________________________________________________________________________
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| >
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| >
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| > melpots@pclink.com.
|
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ARTISTINSC@AOL.COM on mon 26 jun 00
Dear David,
i have several types of extruders and the most important thing is how much
help you have before deciding which model to buy.i was happy with my home
made ripped design 4"ROUND MODEL BUT WHEN I GOT A LITTLE INHERITANCE WENT
OUT AND BLEW IT ON FANCY DREAM EQUIPMENT ALL OF WHICH TURNED OUT TO BE A
MISTAKE AS A LOT OF THE HIGH PRODUCTION TOOLS ON THE MARKET FROM extruders
to slabrollers are better used in a two or m ore person studio.i actually had
better luck with my old non deairing pugmill with the bluebird dies, i
designed on the blanks they sold with the pugmill for that purpose, and had a
machine shop(AT MUCH COST) drill out (ALL MY DIES WERE STOLEN BY MY
"student/carpenter couple i told of a couple years ago) .Filling , cleaning
and delivering the extrusion blemish free are indeed the considerations you
must consider and what system you design to use will depend a lot on the
type of extrusions you will need and i do not think one person's style of
doing this will fill everyone's needs.actually horizontal has seemed best to
me and you can pick up conveyer systems used if you live in a city with a
lot of businesses using them.a system of wood ware boards will work
possibly, did for me.long exrrusions coming out of most vertical machines
will have to curve to deliver them and doing that alone and keeping the other
end of the tube fed with clay is an amazing one person task.the clay also had
bettered have the characteristics to be plastic enough totake the bending
without the memory factor and blemishes intefering with the integrity of the
extrusion.your space allowances also need to be considered as with any
operation, especially if it is limited.Often the extrusions need smoothing
by hand as soon as possible when they are laid out after delivering.It all
depends on the clay and the drying factors you work with .
if you can spend a couple days working in someone's studio helping them with
the extruder you wish to buy before jumping you may have a lot moreinsight
whether that one is for you.the bailey is very high to fill and the
electric pneumatic system uses clay fast.the north star big blue takes a
whole 25# bag also and consumes a lot to fill the clay barrell and is not
really a continuous operation for one person.somee of the older 4" round
types have somewhat dangerous plunger arms that you can easily damage
yourself with if you get too tired and careless around them.also you have to
really look at the work you are doing and really think if extrusion is the
look that works with the type of objects you make.
i don't know if this helps but it is the result of years of messing with the
extruder by me.
don't write to tell me my typing stinks as i do not have a spell or
punctuation check and am too tired to care tonight.
have fun
margaret
Ray Aldridge on fri 30 jun 00
At 10:56 AM 6/25/00 -0500, you wrote:
>Hey David, I'm considering building a hydraulic extruder
>and would be interested in hearing how you like working
>with yours. I'm sending this to Clayart, since there may
>be some others interested.
>
>A few questions, if you don't mind:
David, I have what might loosely be defined as a real cheap hydraulic
extruder, which I built when I needed a way to extrude shaped canes of
colored porcelain, back when I was making millefiore jewelry.
The engine is one of those cheap hydraulic jacks from K-Mart, mounted
upright with the top of the jack's piston held captive in a screwed
together block of plywood. The base of the jack bears on the push rod that
forces a disk of wood into the throat of a piece of PVC pipe, which was
held by setscrews in a lower block, the whole thing mounted on a length of
2by. The advantage of the setup was that different colored clays could be
stored in different pieces of pipe.
Actually, the advantage was that if you have a scrap wood pile, you can put
the whole thing together for 20 bucks or so.
Ray
Aldridge Porcelain and Stoneware
http://www.goodpots.com
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