Witgert
Witgert Rakuvaria Extreme Clay White 10 kg
Witgert Rakuvaria Extreme Clay White 10 kg
Your specialist ceramic retailer in Berlin
Everything for pottery, chosen with love
For artists, creatives, and craftspeople
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Witgert Rakuvaria Extreme Clay White 10 kg
Witgert Rakuvaria Extreme White is a very strong and coarsely grogged raku and sculpture clay for large, dynamic pieces. With a 60% grog content, it offers maximum stability during rapid raku firing.
The coarse grain ensures high stability, low deformation, and reduced cracking. Ideal for hand-building ceramics, sculptures, and experimental firing techniques.
Designed for work where modeling and firing occur in close succession.
Characteristics
- Manufacturer: Witgert
- Type: Extreme Rakuvaria
- Color: white to off-white
- Contents: 10 kg
- Fireclay content: 60%
- Grain size: 0–3 mm
- Heavily grogged
- Stoneware clay
processing
- Ideal for Raku firing
- High resistance to temperature changes
- Excellent dimensional stability for large objects
- For construction and sculpture techniques
- Suitable for fast work processes
Technical data
- Drying shrinkage: 4.7%
- Firing shrinkage at 1200 °C: 3.3%
- Water absorption at 1200 °C: 7%
- Firing range: 1000–1300 °C
- Burning color: white to off-white
- WAK 20–500: 6.2
Areas of application
- Raku ceramics
- Sculptures
- Major construction work
- Artistic ceramics
- Experimental firing techniques
Questions?
We are always available to answer your questions. You will usually receive a response the same day via the contact form below.
Voices of happy potters
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"I wrote to two retailers and the manufacturer; only Formwerk took the time to answer my questions." Zeynep from Berlin Schöneberg
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"The Amaco glazes look exactly like they do in the photos after firing. Delivery also went smoothly." Anna & Leo from Leipzig
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"I had no idea if my power supply would be sufficient. They explained in detail over the phone which oven would be suitable. It’s been running for three months now without any issues." Julia from Berlin Moabit
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"A bottle of glaze was badly dented upon delivery. One email, and the replacement was on its way the next day. Great service!" Lara from Hamburg
Our promise
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Our delivery guarantee
At our company, "sold out" doesn't mean "out of luck." If a product is out of stock, we will search for it for you among our 12 European partners. We cover the additional shipping costs.
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Here for you on weekends too
Do you have questions about your order or the right product? Give us a call or send us a message, and we'll get back to you quickly. We're here for you, even on Saturdays.
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Help shape our product range
Missing a product for your next project? Write to us via the contact form and we will add it to our range for you. This is how our shop grows with the wishes of our community.
