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YouTube

Mixing Malachite, Tungsten and Obsidian Shards into Clay - The Results

Florian Gadsby via YouTube

Overview

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Explore an experimental ceramics video where a potter tests incorporating unconventional materials including malachite, tungsten chunks, tourmaline, and obsidian shards into high-iron stoneware clay. Follow the complete process from wedging these challenging materials into clay bodies through throwing test bowls, despite the difficulties posed by sharp and large particles. Witness the unpredictable outcomes as the experimental vessels undergo biscuit firing at 1000°C, glazing and waxing processes, and final reduction firing in a gas kiln. Learn about the safety considerations when working with toxic materials like raw malachite, which can leach copper when damp. Discover which material combinations create successful results versus disasters, and gain insights into how different additives can bring life and character to clay bodies and glazes. The video documents both successful experiments and failures, providing valuable learning opportunities for ceramic artists interested in pushing the boundaries of traditional clay bodies through material experimentation.

Syllabus

0:00 - Introduction & mixing the raw materials into my clay
4:37 - Bad news about the Frankenstein clay
6:34 - Biscuit firing the bowls to 1000ºC
8:01 - The first, disastrous result
9:42 - Glazing & waxing the bowls
10:48 - Tidying the glazed bowls surfaces
11:25 - Packing the bowls into my Rohde KG-340 gas kiln & reduction firing them
12:47 - Unpacking the kiln & sanding the bowls
14:12 - THE RESULTS!

Taught by

Florian Gadsby

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