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glazenerd

Member Since 18 Dec 2015
Offline Last Active Today, 12:55 PM
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Posts I've Made

In Topic: Looking To Start Mixing My Own Glazes

Today, 12:52 PM

Seeing as though I am home early, weather shut us down yet again.

 

Frit choices are made by application: high gloss, satin, matte, some for lower fire use, some higher, some boron based, others higher alumina. Application determines frit choice: to start out: 3110 and 3124 will get you going across a broad range.

EPK is the common kaolin used, OM4 ball clay is also popular; I prefer New Zealand Kaolin.

 

Chemicals:   Mahavir or Custer for potassium feldspar; KonaF3 (minspar) for blended, and Nep Sy for sodium feldspar. Custer is iffy.

                     325m silica for all glazes, 200 m silica if you are doing high fire in specific applications. (or clay bodies).

                     Dolomite for calcium and magnesium, and talc for magnesium

                     Lithium carb for straight lithium additions, or spodumene and petalite for lithium feldspar.

                     Gerstley borate ( or equal ) for boron based glazes/ lower melt temps 

                     Alumina Hydrate ( needed in rare instances).... 1/4lb is plenty.

                     Bentonite... glaze viscosity.... 1/4lb is plenty to start.

                     Whiting... calcium source.

                     Copper carb.  cobalt carb, red iron ox... will give you plenty of color to start... with some choice stains.

 

This short list will get you well down the road and give you a working glaze base.

 

Nerd


In Topic: Plastic Bat Issue

Yesterday, 06:44 PM

Man I need new glasses... my first read was  Plastic Bag Issue. 

 

Nerd


In Topic: Pottery Knowledge Quiz Of The Week (Pkqw): Week 1 And Introduction

Yesterday, 06:41 PM

1. B.. but D can add to the feldspar.

2. B

3. A

4. C

 

 

carried to the surface from evaporation.  Vaporization

 

Nerd


In Topic: Glaze Additive/s

28 March 2017 - 05:24 PM

 propylene glycol................................and here I thought I was the only one who knew about this.

 

I was asking, because I am going to play with some custom blended glaze suspension recipes this summer as well.

 

Nerd


In Topic: Qotw: Pottery Attributes In The Studio

28 March 2017 - 05:22 PM

"other" for me, which I cannot explain without a bunch of techno-blather. Suffice to say I have spent seven year studying every aspect of crystalline glaze and the clay body it goes on. Two + years ago it occurred to me that the porcelain was causing just as much problems as the glaze. This summer I will actually put all that study to use and make things. Unless my calculations are wrong (they are not ) I should see some dramatic results.

 

Nerd

 

side note: of course my throwing skills will have to greatly increase as well.