Joseph Harrington, Cast Glass Courses

I have released new dates for glass casting courses.

Lots of different dates to choose from and 3 different courses with different processes, duration, levels and costs to suit a wide range of participants.

Follow link in bio for more information.

Feel free to contact me if you have any questions.

Joseph Harrington, Cast Glass Courses

I have released new dates for glass casting courses.

Lots of different dates to choose from and 3 different courses with different processes, duration, levels and costs to suit a wide range of participants.

Follow link in bio for more information.

Feel free to contact me if you have any questions.

Sculptural Slumping Part 2

Sculptural Slumping Masterclass Part 2
Kiln set-ups, complex forms and project planning
20-22 February 2026

Fri/Sat 10-4pm, Sun 10-3 £400, max 4 students

This new course is an extension to the Sculptural Slumping Masterclass and focuses on creating complex glass forms through a sequence of kiln firings that bend the glass in several stages or using one-off set-ups to achieve dramatic shapes. Students will complete two projects over three days using Bullseye sheet glass and a range of studio props (ceramic and refractory). Participants will make dynamic, flowing sculptures by harnessing the forces of gravity and heat. Primarily using my props, you’ll explore inventive ways to employ ad hoc props to hold or guide glass including wire, kiln furniture and fibre blanket.

You may have taken the Sculptural Slumping course but this course is suitable for new students too as we’ll review foundational prop making processes and concepts. A comprehensive visual presentation detailing the making of a selection of Lisa’s previous work, will give a fresh perspective to a range of manipulation techniques. Temperatures and annealing strategies will be discussed. Participants will become more confident devising firing programs that leave room for spontaneous and surprising results.

Students are asked to bring a researched concept (sketches or other media) to discuss for future work. Together we will trouble shoot your ideas, imagining kiln set-up scenarios to achieve your ideas.

A handout will summarise the core concepts and firing programs covered in the demos and presentation. All kiln-based materials are provided but students will bring their own Bullseye glass but the methodologies you’ll learn apply to any type of glass.

Cost: £400 per person, includes mould-making materials and firings but students will bring their own glass. We’ll eat on my patio (or dining room) or go to a local cafe (students can also bring a packed lunch). Full payment confirms a place.

Local accommodation list is available on request

Email studio@pettibone.co.uk for booking forms and further information

Corning Museum of Glass – Casting Symposium 1st – 3rd June 2026

The Studio of the Corning Museum of Glass proudly presents The Studio Casting Symposium, a premier gathering of internationally recognized artists and innovators working in cast glass who will share their expertise through live demonstrations, panel discussions, and in-depth lectures.

Exploring both the creative and technical dimensions of the medium, the symposium offers an unparalleled opportunity to engage with the leading voices shaping contemporary cast glass. Whether you are an established practitioner or newly exploring the field, this program promises to deepen technical knowledge, spark creative inquiry, and foster meaningful dialogue within a vibrant community of makers.

Scheduled immediately prior to the Glass Art Society (GAS) Conference, participants are encouraged to extend their stay in Corning—the heart of the glass world—for a full week of artistic and intellectual exchange.

Join us as we celebrate and explore the creative and technical possibilities of cast glass with these remarkable contributors.

Registration opens Monday, December 1, 2025 at 9 am ET. Space is limited, and we expect the symposium to sell out quickly.

FULL DETAILS HERE

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