Sam or Mary Yancy on fri 13 feb 04
Nothing against flap wheels, BUT you can get a uneven surface (high/low's) with them. I think the wet/dry sand paper glued to a plastic bat and wet and spinning (your wheel) is the best as you can also control some possible unevenness and protential wobble or high spots. I use this method. I only use a flap wheel to smooth our uneven items such as auto parts.Also another option, Grinding compound is generally messy, leaves dark marking and is oil based. Sam in daly city
but I object to this. When finishing ceramic
objects, I think it is a noble and appropriate gesture to avoid non-fired
processes whenever possible. If you use the abrasive flap wheel mentioned
in an earlier post (sorry to be so persistent), you will not have to resort
to clear nail polish, the mere idea of which makes me queasy. I do not
understand the mind-set that would make one even consider such a thing when
appropriate finishing methods will serve the purpose very well.
Best wishes -
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Office - wpitelka@tntech.edu
615/597-6801 x111, FAX 615/597-6803
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
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Vince Pitelka on sat 14 feb 04
You wrote:
"Nothing against flap wheels, BUT you can get a uneven surface (high/low's)
with them. I think the wet/dry sand paper glued to a plastic bat and wet
and spinning (your wheel) is the best as you can also control some
possible unevenness and protential wobble or high spots. I use this method.
I only use a flap wheel to smooth our uneven items such as auto parts.Also
another option, Grinding compound is generally messy, leaves dark marking
and is oil based. Sam in daly city"
I guess I didn't make myself clear. You would NEVER use a flap wheel on
bone dry clay, and a flap wheel might even be too aggressive for low-fire
wares. I am not sure how you are using your flap wheel, but for midrange
and high-fired wares, a flap wheel would never give an uneven surface,
because it is flexible, and adjusts to the shape of the clay, smoothing and
rounding the contact surfaces. No flat grinding or sanding surface can
possibly do as well, because it only has a single-plane contact. Again, I
am sorry to be so persistent, but that's what happens as a result of 35
years of serious exploration in clay. As I said, I have tried every
conceivable way of smoothing the bottoms of fired ceramic forms, and no
other method even begins to compare with an abrasive flap wheel.
Best wishes -
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Office - wpitelka@tntech.edu
615/597-6801 x111, FAX 615/597-6803
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
Ivor and Olive Lewis on sun 15 feb 04
Dear Friends,
I recall that having a piece of Carpet cemented to a bat being
recommended at some time or other. The carpet was kept wet and
impregnated with fine silicon carbide grit. Must have been in on of
those compendiums of useful tips put out by CM every ten years or so.
Best regards,
Ivor Lewis. Redhill, South Australia
Vince Pitelka on mon 16 feb 04
> To bad it is not possible to use a flap wheel under water. I wonder what
> the abrasive material on the flaps is - could it be silica - another
source
> of micro fine silica in the air?
Ron -
You are probably right about that. We have our flap wheel mounted on a
motor outside under the shed roof out back. Even if one does not have a
convenient shed roof attached to the studio, it would be a simple matter to
mount a bench grinder on a moveable stand, and simply move it outside when
flap-wheeling. I agree that we must do all we can to keep all fine silica
out of the studio air.
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Office - wpitelka@tntech.edu
615/597-6801 x111, FAX 615/597-6803
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
Ron Roy on mon 16 feb 04
To bad it is not possible to use a flap wheel under water. I wonder what
the abrasive material on the flaps is - could it be silica - another source
of micro fine silica in the air?
When using a stone on the feet of pots you soon wear grooves in the stone -
which are ideal for smoothing the contours of the feet.
I has occurred to me - to throw a flat bottomed disk - the same size as a
wheel head - with raised sides - fired to glaze temp but no glaze. It could
have some water in it and provide an excellent grinding surface when
attached to the wheel head - and not be a dust generator.
RR
>Nothing against flap wheels, BUT you can get a uneven surface (high/low's)
>with them. I think the wet/dry sand paper glued to a plastic bat and wet
>and spinning (your wheel) is the best as you can also control some
>possible unevenness and protential wobble or high spots. I use this
>method. I only use a flap wheel to smooth our uneven items such as auto
>parts.Also another option, Grinding compound is generally messy, leaves
>dark marking and is oil based. Sam in daly city
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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