firing-004-Kiln Wash

 < firing > < firin deneyimlerim > < kiln safety>< Kiln Wash>

source: johnbrittpottery.com   johnbrittpottery.blogspot.com  John Britt - 7 oct 2009

Notation: 

KW = Kiln Wash

Brand\content \ %

Kaolin

Silica

Ball Clay

EPK

Calcined EPK

Alumina Hydrate

Calcined Kaolin(EPK)

Kaolin(EPK)

Alumina

Ultrox

Kyanite 35 mesh

Zircopax

Pyrotrol or Pyrax(pyrophyllite)

G2O Feldpspar

Fire clay

Sand

Sawdust

crushed oyster shells

flour

Karl`s killer KW

30%

20%

10%

40%

Beck`s KW

35

32

17

16

KW-I

10

90

KW-II

25

25

25

25

KW-III

45

18

28

9

Pier KW

25

35

40

No crack KW

25g

25g

50g

Sup Aws No crack KW

25g

25g

50g

1g

Basic salt KW

50%

Wood firing Wadding

5 part

16

16

to taste

Japanese Wood Wadding

coat wadding with rice hull ash

to taste

1

1

1

2) Clean Kiln shelves

source: Vince Pitelka "How to clean kiln shelves, How to mix kiln wash, how to apply kiln wash"

Omitting these cause bad glazing

use metal brush or heavy wire brush for grinding

2.1) Safety precautions

Do the work outdoor

use safety glass or face shield, dust mask. appropriate safety gloves

2.2) First step

Place the shelve on a cushioned bed, thick cloth or foam robber

2.3) Using Chisel (TR: keski)

TR: Keski yapoşmış sırları temizlemekte kullanılıyor.

Keskinin ucu keskin olsun ama kalem gibi sivri olmasın 

Keski her zaman yatay kullanılmalı yüzeye 20 veya 10 derece eğim ile

 No : 

     |

-------------------

yes and even more 10 or 20 degree

        \

------------------------

2.4) grinder

4 1/2 inch angle grinder

2.5) Kiln wash for gas and electric oxidation or reduction kilns - Vince Pitelka

TR: Fırça ile sürülüyor, 2 katman sürülmeli

• 40 % Kaolin
• 10% Ball Clay
• 50% Alumina hydrate

Avoid getting KW on the edges of the shelves. Because it can flake off on firing and fall on glazes at below.