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Pittsburgh Glass Center

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Cold Shop

in Studio

Explore Coldworking!

$1,000 MEMBER PRICE: $1,000

with František Janák

Calendar Next session starts Jun 29, 2026 at 9 am, runs for 1 week

With 60 years of experience and practice in the field of coldworking, František hopes to pass on the vast knowledge that he has acquired. He is coming from Czechia where coldworking has earned a long and strong tradition. In this class you will learn a step-by-step process to make a small glass sculpture from a solid block of glass and decorative, rich cutting to make patterns on blown vessel blanks. Together we will build a strong foundation for professional craftsmanship. The class will cover multiple approaches to shaping, sculpting, engraving, grinding, and polishing glass.

You will also learn how to assemble components using Ultraviolet Epoxy and properly set up and use different machines like horizontal flatting mill, vertical lathes, diamond saws, and belt sanders. With each machine there are specific and different grinding, smoothing, and polishing tools, materials, and processes. These tools include original Czech-made diamond, stone, and resin wheels. You will also be provided with information on how to design a perfect professional cold shop, including the necessary equipment.

No previous coldworking experience is required, although intermediate coldworkers are very welcome and may learn more than they have ever expected.

All students are welcome! Intermediate and advanced students will also be able to learn new skills and hone their existing skills.

Evening Open Studio

Studios are open until 9:30PM for students to practice. Depending on the class, process, and techniques, this time might be highly suggested by instructors for students to use. In other classes, this time might be considered optional.

For more information, please review Summer Intensives.

Full Course

Layers - A Hot & Cold Integration

$2,000 MEMBER PRICE: $2,000

with Chris Giordano & Cole Johnson

Calendar Next available session starts Aug 3, 2026 at 9 am, runs for 2 weeks

This two-week intensive examines the relationship between the hot and cold shop. We will be focusing on and encouraging both exploration and refinement of form. Throughout the course you will move between studios, developing vessel forms, and advancing them through various surface and finishing techniques.

In the hot shop, you will focus on building technique and creating blank forms to further work in the cold shop. Demonstrations will cover various techniques, such as double overlay, Swedish overlay, stuff cups, powder application, and pattern making. Guided instruction will highlight bubble setup, heat control, timing, and intentionality. Using the 3D object to study form, color, and function.

Cold shop sessions will focus on equipment operation, punty removal, lathe work, and surface treatment. Using various cutting wheels and methods of surface finishing, students will explore texture, pattern, and optical effects. Designed for students with prior hot shop experience, this course supports technical growth, material awareness, and a deeper understanding of how form, surface, and color interact.

Students must be able to comfortably blow and cap a bubble. Participants are encouraged to bring a sketchbook and a desire to learn.

Evening Open Studio Studios are open until 9:30PM for students to practice. Depending on the class, process, and techniques, this time might be highly suggested by instructors for students to use. In other classes, this time might be considered optional.

 

For more information, please review Summer Intensives.

 

Learn more about Chris Giordano at <a href="www.giostudio.com"></a>

Learn more about Cole Johnson at <a href="www.colejohnsonglass.com"></a>

 





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