Lampworker Burned Glass Cone Ring & Cup Expander

Take your lampworking and glassblowing craft to the next level with this professional-grade Glass Cone Ring Cup Expander. Designed specifically for lamp workers and flameworkers, this precision tool allows you to widen, shape, and expand glass rings and cup forms with consistent, controlled results — straight from the flame. Whether you're crafting wearable glass rings, decorative cups, or artistic vessels, this expander is an essential addition to your glassworking bench.

Why Lampworkers Love This Tool

Precise Cone Shaping: The tapered cone design allows you to achieve uniform expansion of glass ring and cup openings with minimal effort.
Heat-Compatible Design: Built to work alongside your torch — simply insert the cone into the hot glass while it's still pliable to achieve the desired size and shape.
Durable Construction: Made to withstand the rigors of repeated flameworking sessions, providing long-lasting performance in your studio.
Versatile Use: Suitable for expanding glass rings, cups, vessels, and other hollow forms — ideal for both beginner glass artists and seasoned professionals.
Non-Electrified: A completely manual, non-powered tool — safe, simple, and straightforward to use at your lampworking station.
No Hazardous Chemicals: Contains no high-concern chemicals, keeping your studio environment safe and clean.

Perfect For

Lampworking & flameworking artists
Borosilicate and soft glass ring making
Glass cup and vessel shaping
Art glass studios and hobbyist workshops
Glass jewelry crafting

Specifications

Type: Glass Cone Ring & Cup Expander
Electrified: No
High-Concern Chemicals: None
Country of Origin: Made in China

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For more information on safe studio practices for glass artists, visit the U.S. Consumer Product Safety Commission (CPSC) for guidance on safe tool use in craft environments.

Learn more: Handicraft

Frequently Asked Questions

Q: What is a glass cone ring cup expander used for in lampworking?

A: A glass cone ring cup expander is a hand tool used by lampworkers and flameworkers to widen or enlarge the opening of a hot glass ring, cup, or vessel while it is still malleable from the torch flame. It allows you to achieve a consistent, symmetrical shape quickly and precisely.

Q: Is this expander compatible with both borosilicate and soft glass?

A: Yes, this cone expander is designed to work with a variety of glass types used in lampworking, including borosilicate (boro) and soft glass, as long as the glass is at the appropriate working temperature when the tool is applied.

Q: Do I need any power source to use this tool?

A: No — this is a completely manual, non-electrified tool. No batteries or electrical connections are required. Simply use it alongside your existing torch setup at your lampworking station.

Q: Is this tool suitable for beginners in glass art?

A: Absolutely. While it is a professional-grade tool, its straightforward cone design makes it accessible for beginner glass artists learning ring and cup shaping techniques, as well as experienced studio artists seeking consistent results.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.