Bill Hall on mon 18 aug 97
I will be purchasing an electric kiln in a month or so (Paragon TNF-24-3),
and will begin the process of developing a pallette of cone 6 oxidation
glazes. I have downloaded several hundred recipes from the net, and am
trying to go through them. I have tried to pick some glazes and then plan
to buy the materials for them, but that quickly adds up. Perhaps it would
be better if I pick some materials and then develop glazes mainly from
those materials. So, here's my question (finally!): What raw materials (and
what relative quantities) would it be most profitable to purchase, and in
what order of priority?
Thanks.
cobbeldi on wed 20 aug 97
Bill, when I first started formulating my own glazes, I bought 50 lb. bags
of: Silica, Kaolin, Custer Feldspar, Nepheline Syenite and Gerstley Borate.
Other feldspars I purchased in 5lb. bags as I needed them. I also bought
a pound each of cobalt oxide, red iron oxide, rutile and copper carbonate.
The rest of the chemicals I purchased as I needed them or when I decided to
formulate a new glaze that needed a small amount of Lithium, zinc, redart,
etc. Oh, I would also purchase an opacifier such as ultrox, superpax, etc.
Hope this information helps you. If you would like some dependable Cone 6
oxidation glazes, e-mail me directly and I will be happy to share.
Debra in Alabama
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> ----------------------------Original message----------------------------
> I will be purchasing an electric kiln in a month or so (Paragon TNF-24-3),
> and will begin the process of developing a pallette of cone 6 oxidation
> glazes. I have downloaded several hundred recipes from the net, and am
> trying to go through them. I have tried to pick some glazes and then plan
> to buy the materials for them, but that quickly adds up. Perhaps it would
> be better if I pick some materials and then develop glazes mainly from
> those materials. So, here's my question (finally!): What raw materials
(and
> what relative quantities) would it be most profitable to purchase, and in
> what order of priority?
>
> Thanks.
>
John Post on wed 20 aug 97
Hi Bill,
You might want to check out this website for some advice on developing your
own cone 6 glazes.
http://digitalfire.com/education/glaze/cone6.htm
I have made some very successful glazes using the advice from this page.
You can start out with just a small list of materials (Potash Feldspar,
EPK, Frit 3134, Flint, Wollastonite). With these basic materials and an
opacifier and some colorants you can develop a wide range of cone 6 glazes
yourself. Glaze calculation software really helps with that (Insight,
HyperGlaze, Glazchem, etc).
The software will also help you to quickly determine which cone 6 glazes to
test and which ones not to test.
>I will be purchasing an electric kiln in a month or so (Paragon TNF-24-3),
>and will begin the process of developing a pallette of cone 6 oxidation
>glazes. I have downloaded several hundred recipes from the net, and am
>trying to go through them. I have tried to pick some glazes and then plan
>to buy the materials for them, but that quickly adds up. Perhaps it would
>be better if I pick some materials and then develop glazes mainly from
>those materials. So, here's my question (finally!): What raw materials (and
>what relative quantities) would it be most profitable to purchase, and in
>what order of priority?
John Post
johnpost@c3net.net
Ron Roy on thu 21 aug 97
Hi Bill,
My answer is predicated on the assumption you can calculate to and from the
molecular formula - that way you will be able to convert most recipies to
the materials you have. If you don't use calculation software you will
simply need to have materials on hand for the glazes you want to try.
Frit 3134 - 50lb (this is a boron frit with no alumina - very useful at cone 6.)
EPK - 50lb
Ball Clay - 50lb
Potash spar - 50lb (g200 or Custer)
Neph Sy - 50lb
Silica - 50lb
Wolastonite 50lb (if thats too much then whiting 50lb.)
Talc 50lb and/or Dolomite
Gerstley Borate 50lb
Strontium Carb. 5lb
Lithium Carb. one lb
Zinc oxide 2lb
Super pax 5lb ( or zircopax or whatever)
Red iron ox 2lb
Rutil 2lb
Copper carb. 1/2lb
Cobalt carb 1/2lb
Tin 1/2lb
I don't think the priority of my list is important - I have simply listed
what I think are the basic materials you will need at cone 6 to get
started. This list would cost me $350 Canadian - approx. With tax pretty
close to $400.
If you still have any money left over you could consider an additional spar
like F4 and other frits like 3278 (no alumina) and 3124 (has alumina.) The
frits are expensive - you need to compare their cost by the lb and by the
bag. For instance a 50lb bag of 3134 at my supplier would cost you $96
Canadian - 11lb (5kg) would cost 26.90 - buying it that way it will cost
about $122 per 50 lb.
It is always a good idea to have many materials in a glaze rather than a
few - less chance for the natural variability of many of the materials we
use to affect our glazes too much.
I am sure others will have important additional information to add here - I
am out of time and ideas.
>----------------------------Original message----------------------------
What raw materials (and what relative quantities) would it be most
profitable to purchase, and in
>what order of priority?
Ron Roy
Toronto, Canada
Evenings, call 416 439 2621
Fax, 416 438 7849
Studio: 416-752-7862.
Email ronroy@astral.magic.ca
Home page http://digitalfire.com/education/people/ronroy.htm
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