Sustainable ceramics is an evolving field that emphasizes environmental responsibility throughout the ceramic-making process.
It encompasses mindful sourcing of materials, efficient energy use, waste reduction, and the creation of durable, timeless pieces.
By integrating sustainable practices, ceramists can minimize their ecological footprint while maintaining artistic integrity.
Recycling Clay
Clay recycling is a fundamental practice in sustainable ceramics. Here’s how to implement it effectively:
- Collecting Scraps: Gather trimmings, failed pieces, and dried-out clay.
- Slaking Down: Break the dry clay into smaller pieces and soak them in water until they disintegrate into a slurry.
- Drying: Spread the slurry on a plaster bat or absorbent surface to remove excess water.
- Wedging: Once the clay reaches a workable consistency, wedge it thoroughly to eliminate air bubbles and ensure uniformity.
Tips:
- Keep different clay bodies separate to maintain consistency. Or throw everything together and be ready for some happy accidents? Just don’t mix stoneware with earthenware clay!
- Regularly recycle to prevent large accumulations of waste.
Recycling Glazes
Glaze waste can be both environmentally hazardous and costly. Implementing glaze recycling practices helps mitigate these issues:
- Collection: Save leftover glaze from dipping, pouring, or spraying.
- Straining: Filter the glaze to remove contaminants.
- Testing: Before applying recycled glaze to important pieces, test it on sample tiles to observe any changes in color or texture.
- Labeling: Clearly mark recycled glaze containers to avoid confusion.
Keep in mind: Recycled glazes may yield unpredictable results, which can be embraced for unique finishes. Just don’t expect to be able to reproduce the results, once it is all used up!
Utilizing Local Natural Materials in Glazes
Incorporating locally sourced materials not only reduces transportation emissions but also connects your work to your environment. Consider the following:
- Wood Ash: Collected from fireplaces or wood stoves, wood ash can be processed and used as a flux in glazes.
- Plant Ashes: Ashes from plants like rice straw or ferns have been traditionally used in East Asian ceramics to create unique glaze effects.
- Natural Clays: Local clays can be tested and incorporated into your work, offering distinctive textures and colors.
Processing Tips:
- Thoroughly clean and sieve natural materials to remove impurities.
- Conduct line blend tests to determine how these materials interact in glazes.
Economic & Ecological Firing
Firing is one of the most energy-intensive aspects of ceramics. To make it more sustainable:
- Kiln Efficiency: Use well-insulated kilns and maintain them regularly to ensure optimal performance.
- Firing Schedules: Optimize firing schedules to reduce energy consumption without compromising results.
- Alternative Energy: Explore kilns powered by renewable energy sources, such as solar-powered kilns, which harness solar energy for firing.
- Shared Firings: Coordinate with other ceramists to share kiln space, maximizing each firing cycle.
Some other topics to consider
To further enrich your sustainable ceramics efforts, you might include:
- Eco-Friendly Packaging: Explore sustainable packaging options for shipping ceramic pieces (if you’re selling).
- Water Conservation: Explore methods to reduce water usage in the studio, such as reclaiming and reusing water from glaze mixing and cleaning.