Linda Arbuckle on tue 21 jul 98
New issue of Studio Potter has a spot on Potters of N FL. Vina Schemer
in Jacksonville talks a bit about her silkscreen process using photos,
with a picture of her and her work, and her address.
--
Linda Arbuckle
Graduate Coordinator, Assoc. Prof.
Univ of FL
School of Art and Art History
P.O. Box 115801, Gainesville, FL 32611-5801
(352) 392-0201 x 219
e-mail: arbuck@ufl.edu
Jonathan Kaplan on fri 2 jun 00
There are a few ways to do this.
1. Any photograph can be made into a ceramic decal. Its a simple process
that is done commercially. The problem is that if you just want to do one
image, it is costly. You can do it yourself if you have a rudimentary
darkroom or access to one. Using a negative, you expose it on Kodalith film
to make a halftone film transparancy. Once this is done, it is a simple
matter of making a silkscreen/stencil and screening it with appropriate
material (china paints), then screening a clear coat over that. You use
special decal paper made for water mount/slide off decals. The decals are
then applied to the piece and fired on. These are called "overglaze"
decals. There are also ways to make an underglaze decal.
2. You can use a photographic emulsion and sensitize the surface of the
pot. The it is exposed to the image, in any number of ways, and the
washed/"processed. The image is then on the surface of the pot. It is not
permanent.
3. The Xerox toner methods that have been posted ont he list.
Jonathan
Jonathan Kaplan
Ceramic Design Group LTd/Production Services
PO Box 775112
Steamboat Springs, CO 80477
(970) 879-9139 voice and fax
http://www.sni.net/ceramicdesign
UPS: 1280 13th St. Unit13
Steamboat Springs, CO 80487
george koller on sun 4 jun 00
Hello Jonathon, Hello ClayArt,
Yes, there are a number of CHEMICAL means to TRANSFER or
build an image from some form of source image. There is also a
somewhat parallel series of process steps which involve what I
think of as a "Analog" software technique to "memorize and
interpret" an image in terms of edges and color. The actual work
is performed by Electro-Mechanical devices that provide the
"muscle" to move clay and glazes about using various tools.
Let me break this down into four possible steps:
Step 1: Scan the Photograph into a digital format. Or take the picture
in a digital format to begin with.
Step 2: The digital photograph must usually be "posterized" and otherwise
reduced in detail using such techniques as required. (My favorite is the
"Paper Cut" filter available in PhotoShop.)
Step 3. The digital image is "Vectorized" using a commercial software
package such as Adobe Streamline. (Not expensive, very powerful).
CAD files are often directly available in this form for Engineering Pieces,
Homes, Ships and so on.
Step 4. Software exists which can build a series of files which can
direct electro-mechanical devices to do such things as remove material,
and add materials. Signs are often made in this manner, and I am
writing software to accomplish this task specifically for clay.
"Electro-mechanical devices" may seem somewhat exotic, but our
friendly, often times less than $200 "Ink Jet Printer" falls in to this category.
The device we have chosen to work with has a 8 foot by 4 foot bed.
There are three axis powered by servo-motors, and the system works
in a anolog "free form" fashion (like a plotter), not the sweeping "digital"
motions of printers and scanners.
After over four years of pursuing this project I believe we have found a
combination of hardware, software, clay, and glazing chemicals which
is not only very artful, in my opinion, but also promising to have a solid
economic basis for production (in US).
An exciting, for me, fallout of this project is that custom images can be
made at economical price points where the image properly fits with
the source image. Because costs over materials are not significantly
more than the costs of compressed air, and electricity projects involving
many 100,000's of details are feasible. One of my favorite images to this
date have been of falling down barn with many details of the wood and
stones, perhaps 800,000 plus seperate colored objects, but very effective
with only 8 base colors. The technique used to render the original piece
was termed "Serial-Graphic" and fits very well with we need for input.
It seems possible that equipment costs can be reduced very substantially
over time but currently hardware equipment costs are "pretty expensive"
at about what a new luxury car would cost.
I am very busy these days with a number of "off clay" projects and I can
only devote about 1/2 of my time to this project. I like to do an occasional
posting with pictures of the newest results, software techniques, and equipment.
I likely cannot take time to respond to separate questions. If you are interested
in learning more by way of an occasional update posting on this project, please
write me to put your e-Mail address on my list.
We will soon be looking for a supplier of nice flat about 15" by 18" stoneware
tiles.
Thank you,,
George Koller
Jonathan Kaplan wrote:
> There are a few ways to do this.
>
> 1. Any photograph can be made into a ceramic decal. Its a simple process
> that is done commercially. The problem is that if you just want to do one
> image, it is costly. You can do it yourself if you have a rudimentary
> darkroom or access to one. Using a negative, you expose it on Kodalith film
> to make a halftone film transparancy. Once this is done, it is a simple
> matter of making a silkscreen/stencil and screening it with appropriate
> material (china paints), then screening a clear coat over that. You use
> special decal paper made for water mount/slide off decals. The decals are
> then applied to the piece and fired on. These are called "overglaze"
> decals. There are also ways to make an underglaze decal.
>
> 2. You can use a photographic emulsion and sensitize the surface of the
> pot. The it is exposed to the image, in any number of ways, and the
> washed/"processed. The image is then on the surface of the pot. It is not
> permanent.
>
> 3. The Xerox toner methods that have been posted ont he list.
>
> Jonathan
>
> Jonathan Kaplan
> Ceramic Design Group LTd/Production Services
> PO Box 775112
> Steamboat Springs, CO 80477
> (970) 879-9139 voice and fax
> http://www.sni.net/ceramicdesign
>
> UPS: 1280 13th St. Unit13
> Steamboat Springs, CO 80487
>
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