Glazing the Foot (From Joanna Turnbull) Joanna said on July 24, 2012: "I am fairly new to pottery and would really love to know how one goes about glazing a piece so that there is no white foot visible at the bottom of the pots.
I keep noticing and admiring various members work where the glaze reaches all the way down to the bottom of the piece, even on glazes that are known to be runny. I really dislike the white band (no matter how narrow I get it) at the base of my pieces. I have tried taping the foot and waxing a very small foot, dipping into wax or just freehand on the wheel. And yes there is always that dreaded white band. The first reply came in from Jeff Poulter a bit later on 7/24/2012: "I have a few ideas.
Joanna replied back again on 7/24 "Jeff - Thank you for your reply! I have another method, and we will likely get more, so I have moved this conversation to a discussion page of its own. Glazes - for the Self-reliant Potter. GlazeMixer.
Defects & Remedies. How to Mix a Ceramic Glaze Recipe. Ceramic glaze recipes are listed in two standard forms.
The first is the Percentage Recipe Form. Here is an example:Tenmoku Custer Feldspar 50.5% Whiting 12.1%Silica 20.6%EPK Kaolin 5.6%Barium Carbonate 2.3%Zinc Oxide 2.3%Red Iron Oxide 6.6% Total: 100% In the percentage form, the percentages add to 100%. You use the percentages to figure out the amount of each material to add. The second form is the Base Glaze Recipe Form. Tenmoku Custer Feldspar 54%Whiting 13%Silica 22%EPK Kaolin 6%Barium Carbonate 2.5%ZincOxide 2.5%Total: 100% Add :Red Iron Oxide 7% In the Base Glaze Recipe Form, the top, base section, has percentages that add to 100%. This is a little different, because if you add all of them together you get 107%.
So, if you wanted to make 1000 grams of glaze you have to do some math. The new scaled recipes is: Custer Feldspar 505Whiting 121Silica 206EPK Kaolin 56Barium Carbonate 23Zinc Oxide 23Red Iron Oxide 66Total: 1000. Triaxial Blend. Home-immediately access 800+ free online publications.
Download CD3WD (680 Megabytes) and distribute it to the 3rd World. CD3WD is a 3rd World Development private-sector initiative, mastered by Software Developer Alex Weir and hosted by GNUveau_Networks (From globally distributed organizations, to supercomputers, to a small home server, if it's Linux, we know it.)ar.cn.de.en.es.fr.id.it.ph.po.ru.sw Glazes - for the Self-reliant Potter (GTZ, 1993, 179 p.) 12.
Developing glazes Most potters do not know much about glaze chemistry and are usually afraid to develop their own glazes. Remember that glaze chemistry is something new in the history of ceramics. It is also true that once glaze recipes were developed they were closely guarded secrets. On the other hand, glaze making is very much like cooking. 12.1. The easiest approach to working with glazes is to start by modifying existing glazes. There are three approaches to modifying glazes: 12.2. 12.3. Line blend 10 steps Line blend 5 steps. Glaze-Coverage-Chart.
Mixing-formulae-for-dry-glaze.