Fraser Forsythe on sat 26 jan 02
builders#2
Hi Ababi.
Basically you're looking for colour recognition in a glaze program. In
Glaze Simulator v.2 there is a utility that will 'predict' the colour of a
glaze based on atmosphere of the firing, base oxides, colourants and
concentrations etc. There is a section where a user can enter their own
definitions for each colour - if they choose to do their own testing. Not
only do you enter the colour oxides present and their concentrations, but
you enter oxides that must be present to facilitate the color, and oxides
that must NOT be present. The program comes with some preset colour
definitions. This module of the program was one of the most complex and is
good about 70-80% of the time. If I enter a recipe that has some iron, some
copper and maybe some tin and will fire in a reduction atmosphere the
program will tell you that it could be a copper red, depending on the
concetrations. Like I said it works for some combinations but not for
others. When you start combining three or more colourants it gets very
difficult to write generalized alogrithm that can predict the outcome.
Maybe next version. ; )
Fraser
Ababi wrote:
> I want to explain myself better:
> In Lana Wilson's Handbook
> In V.C..'s handbook
> In Rhodes/Hopper
> In The Magic Of Fire by Tony Hansen even widely.
> In the two Hebrew written books I know:
> An example
> Material "A"
> Colorant "C" In reduction.... in oxidation...
> Works from cone 02 no higher than cone12
> If their is material "W" it will be pink if there will be material "Z"
> it will be green
> If you add colorant oxide "Y" it will be mustard blue ( that what
> happens to the forgotten mustard in my kitchen)
> but when I turn the page I forget, because there is so much information
> in each page that concerned with one material + one coloring oxide ( or
> carbonate)
> Why did I think of a web site page? I have seen, I think an
> educational
> site located in New Zealand where you could move the mouse and get
> different colors.
> My knowledge in computing is about -0.000001 That is why I respect the
> people who develop these tools that make life so easy.
> Robert Wirt In his tutorial to the Glazechem has a good explanation to
> what requires to built a software. I do not have the program, so I
> cannot quote from there: It was as I remember 'the relation between the
> bananas, cucumbers, their maturing, how long takes to cook them and
> may thing around, looks like their was not any connection , yet to
> built a software, for ceramics,you need much more knowledge that how
> it looks to the regular person, on the surface.
> I need this tool not the same way as the good software more like a
> direction.
> Fraser Forsythe in Glaze Simulator , Version two gives, according to
> my, yours, results of firing a pointer, indicates for suspected
> results. (glazing) This kind of thing I would like about colors,
> I wish Fraser,
> that pointer would be adjustable not just graphic!
> I mean at home,where I keep my computer, less dusty
> before going to the studio, where the oxides, begging me to add them
> to a glaze, to decide what I like and what not.
> Like if there where five or ten combined cardboard circles that would
> help me to suggest coloring, because as I wrote earlier in this letter
> when I read one page, I forget the written on the other one.
> Ababi Sharon
> Kibbutz Shoval- Israel
> Glaze addict
> ababisha@shoval.org.il
> http://members4.clubphoto.com/ababi306910/
> http://www.milkywayceramics.com/cgallery/asharon.htm
> http://www.israelceramics.org/
--
Fraser Forsythe
www.glazeexchange.com
fraser@glazeexchange.com
fraserforsythe@icqmail.com
icq# 56080709
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