The range of Raku glazes from Mayco are designed to develop beautiful metallic lusters and crackle patterns when fired according to raku firing processes.
RK-107 Oil Slick develops a mix of dark blue, green, and purple tones following a proper raku firing.
Firing Range: Cone 06
General Use / Application Instructions:
- Shake for 5-6 seconds before use.
- Stir well.
- Apply 3 coats to bisqueware.
- Use of a thermal shock-resistant raku clay body will help reduce the incidence of cracking.
- Do not glaze inside or bottom of ware.
- Thinner coats tend to produce greater metallic effects.
- If you are not getting the desired metallic results you can adjust your glaze application.
- Allow to dry thoroughly.
- Fire to cone 06 (1850°F, 1010°C) and hold for 5 minutes.
- Remove ware from kiln with tongs. If using an electric kiln make sure power is off, and allow to cool.
- Place ware into metal lidded container with combustible materials.
- Place lid on immediately to reduce oxygen.
- The combustible materials will produce flames and smoke.
- Leave in container until cool, approximately 20 minutes and remove.
- After ware has completely cooled use water and a scouring pad to clean.
Food Safety: Raku glazes are not recommended for dinnerware due to the durability of the fired glaze are recommended for ornamental use only.
Tips:
- Minimizing the distance between the kiln and the reduction container can improve the development of metallic colours.
- Cleaning will improve the luster and colours in the fired finish. Actual fired results will vary according to choice of clay.
- Raku glazes will not produce the same results in a typical electric firing as they must encounter a raku environment.
- Due to the unpredictable nature of this firing technique, results will vary with every firing.
- Mayco's range of Fundamentals Underglazes can be used to put a background colour down before burnishing and applying horsehair or feathers in a raku firing.
I have used it in both Raku firing and glaze firing on Earthenware!
From: Helen Aland
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Date: 19/07/2023
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