Mark & Pauline Donaldson-Drzazga on fri 19 nov 99
------------------
Dear Clayarters,
I use an Angle Grinder ( that's what they are called here in the UK), the
smallest type with a Masonry Disc, this rotates at such a speed that it =
almost
melts the glaze/clay. It works a treat, I also use it to clean up the =
shelves.
They can be bought in all DIY stores throughout the world, I wouldn't be =
without
mine, beats the cold chisel I used to use on the shelves, and it cut kilns
shelves and props brilliantly.
Happy potting Marek http://www.moley.uk.com
Fabienne Cassman on sat 20 nov 99
Hello :)
I was looking at a row of grinders at the store yesterday. No matter how I
looked at it, I could not visualize an acceptable way to grind. Assuming
you are using an angle grinder, how do you secure the pot while you use the
angle grinder considering various sizes pots?
Thank you,
(visualizing flying pots or grinders, and blood drops)
--
Faye http://clay.justnet.com
Yes, I have learned from my mistakes...
I can reproduce them exactly.
Mark & Pauline Donaldson-Drzazga on sun 21 nov 99
----- Original Message -----
From: Fabienne Cassman
To:
Sent: 20 November 1999 21:54
Subject: Re: grinders for glaze drips etc.
> ----------------------------Original message----------------------------
> Hello :)
>
> I was looking at a row of grinders at the store yesterday. No matter how
I
> looked at it, I could not visualize an acceptable way to grind. Assuming
> you are using an angle grinder, how do you secure the pot while you use
the
> angle grinder considering various sizes pots?
>
> Thank you,
>
> (visualizing flying pots or grinders, and blood drops)
>
>
> --
> Faye http://clay.justnet.com
>
> Yes, I have learned from my mistakes...
> I can reproduce them exactly.
Hi,
My omission, sorry I forgot about safe potting.
All you need to do is secure the pot into some clay to hold it safely in
place. Another wonderful use of clay is to use it inbetween large pots when
delivering personally by car, it forms around the spaces really well.
Happy (and safe) potting Marek http://www.moley.uk.com
Cindy Strnad on sun 21 nov 99
Faye,
To use an angle grinder on a pot, I hold the pot with one hand (wear a thick
glove), and the grinder in the other. I have fairly large, strong hands. If
you have smaller hands, this might best be done with an assistant to hold
the pot. Otherwise, you can sit and hold the piece between your knees to
grind it. Again, protect your legs. It's the one time you skip the
protection that the grinder will slip and gouge your flesh. Trust me--I
know. Best solution, of course, is not to get glaze drips, which can
be accomplished over time. I occasionally have whole kiln loads now which
need no grinding.
Cindy Strnad
Earthen Vessels Pottery
Custer, SD
Vince Pitelka on sun 21 nov 99
>I was looking at a row of grinders at the store yesterday. No matter how I
>looked at it, I could not visualize an acceptable way to grind. Assuming
>you are using an angle grinder, how do you secure the pot while you use the
>angle grinder considering various sizes pots?
Appropriate grinders are fairly inexpensive these days. You can get an
angle grinder for less than 100 bucks, and use it to clean your shelves and
posts. Get a bench grinder for less than 50 bucks, leave the standard
grinding stone on one end of the arbor, and install an abrasive flap wheel
(from grainger.com) on the other end, and use it to grind and dress the
bottoms of your pots. This is simple, but you cannot do both tasks with
either one. You need both. No other choice. It is appropriate to be
thrifty when purchasing tools, but it is not appropriate to be cheap. Get
good tools, and get the right ones for the job.
Best wishes -
- Vince
Vince Pitelka
Home - vpitelka@DeKalb.net
615/597-5376
Work - wpitelka@tntech.edu
615/597-6801 ext. 111, fax 615/597-6803
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Ray Aldridge on mon 22 nov 99
At 04:33 PM 11/21/99 EST, you wrote:
>----------------------------Original message----------------------------
>>I was looking at a row of grinders at the store yesterday. No matter how I
>>looked at it, I could not visualize an acceptable way to grind. Assuming
>>you are using an angle grinder, how do you secure the pot while you use the
>>angle grinder considering various sizes pots?
>
>Appropriate grinders are fairly inexpensive these days. You can get an
>angle grinder for less than 100 bucks, and use it to clean your shelves and
>posts. Get a bench grinder for less than 50 bucks, leave the standard
>grinding stone on one end of the arbor, and install an abrasive flap wheel
>(from grainger.com) on the other end, and use it to grind and dress the
>bottoms of your pots. This is simple, but you cannot do both tasks with
>either one. You need both. No other choice.
I have neither. I use a belt sander set upside down on the bench for
grinding bottoms. (And a respirator)
I don't have to grind kiln shelves these days (though the belt sander would
work adequately.) I limit myself to glazes with plenty of alumina and
don't use kiln wash. To get the years of accumulated kiln wash off my old
shelves, I used a weird device that goes in the chuck of a drill motor--
it's used for rough paint removal and is a little hard to describe. It's a
sheave that holds a number of heavy steel wires which are free to move in
relation to the axis. It works with a flailing action, the spinning wires
touch the workpiece at their tips and rapidly erode the kiln wash. It'll
erode the shelf as well if you're not careful, but the eroded surface has a
granular texture that seems adequately smooth.
Ray
Aldridge Porcelain and Stoneware
http://www.goodpots.com
Fredrick Paget on tue 23 nov 99
After trying a lot of these diferent methods of grinding bottoms I have
settled on using a flat diamond coated disc about 6 inches in diameter
that is glued to a bat. I got the disc from a lapidary supply firm and it
cost about 30 US dollars. The diamond powder is about 100 mesh and is
attached to the disc by a metal plating.
It has to be run wet which is a plus because there is no dust. My wheel
(Jepson) has a really deep splash pan so I put 2 gallons of water in i t
and put a small fountain pump in it which pumps a small stream of water
onto the disc when it is running through a copper tube. You can also use a
fairlly large sponge and wet it and hold it in one hand and squeeze out
some water from time to time.
The diamonds cut very fast and leave the whole foot with a nice flat smooth
finish.
I do crystal glazes so every pot has to be cut off the firing pedestal and
ground.
These discs are used in gem cutting and shaping and come in a variety of
grades and prices. Some bigger ones are over 100 dollars but if you look
around on the internet you can find the cheaper ones.
I glued it to a bat with epoxy and it stayed on for a year and came off.
Now I am trying a 3M waterproof urethane glue.
>>>I was looking at a row of grinders at the store yesterday. No matter how I
>>>looked at it, I could not visualize an acceptable way to grind. Assuming
>>>you are using an angle grinder, how do you secure the pot while you use the
>>>angle grinder considering various sizes pots?
>>
>>Appropriate grinders are fairly inexpensive these days. You can get an
>>angle grinder for less than 100 bucks, and use it to clean your shelves and
>>posts. Get a bench grinder for less than 50 bucks, leave the standard
>>grinding stone on one end of the arbor, and install an abrasive flap wheel
>>(from grainger.com) on the other end, and use it to grind and dress the
>>bottoms of your pots. This is simple, but you cannot do both tasks with
>>either one. You need both. No other choice.
>
>I have neither. I use a belt sander set upside down on the bench for
>grinding bottoms. (And a respirator)
>From Fred Paget, Marin County, California, USA
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