search  current discussion  categories  kilns & firing - misc 

glaze test for lime matt orange-brown, 1250c (2282f) oxidation.

updated tue 22 may 01


Alisa og Claus Clausen on mon 21 may 01

Glaze test for Lime matt orange-brown, 1250c (2282f) oxidation.

Source: Hamer and Hamer, page 181.

Tested on light, mid-range stoneware, with iron flecks. Fired to 1215c =
(22219) oxidation, at this ramp:
100c to 600c 212f to 1112f
150c to 1100c 300f to 2012f
100c to 1220c 212f to 2228f
soak at 1220c for 30 minutes =20
cool down 100c per hour to 900c (212f/1652f)=20
soak at 900c for one hour
shut off and cool down (aprox. 40 hours)

46 Cornish Stone
14 China Clay
5,0 Tin Oxide
28 Whiting

7.0 RIO

All measurements measured up or down to the nearest whole decimal.
Substitutions: None

Resulted in mat brown glaze, with greenish black where thickest in =
lowest areas textured patterns. Sayed where applied and has a good =
feel.. Despite lower firing temperature than suggested, glaze is well =
melted and has a very flat, smooth surface.

Best regards,
Alisa in Denmark