About

About Treso Glass — made for the people who notice

Handmade borosilicate glass by Shayne “Treso” Lefrancois in Salem, Massachusetts.

Wearable fire, functional art, and custom pieces built to outlast trends. Made for the people who notice.

Shayne "Treso" Lefrancois is the artist behind Treso Glass, creating handmade borosilicate glass with a focus on flame work, fume technique, wearable pieces, functional forms, and one-of-a-kind art glass. His work is rooted in more than ten years behind the torch, beginning in Salem, Massachusetts, where he moved from glass enthusiast and collector into full-time flame worker.

Treso's work often centers on fume work, a process that uses precious metals like silver and gold in the flame. As the metals vaporize, they bond with the glass and create shifting color, smoke-like depth, and unexpected patterns. What begins as clear glass becomes something layered, colorful, and completely unique.

No molds, no mass runs, no shortcuts. Every piece is shaped by hand, made by flame, and finished one at a time.

Studio and markets based in Salem, Massachusetts.

10+ years behind the torch

Borosilicate glass + fume work

Wearable, functional & custom

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Shayne "Treso" Lefrancois shaping borosilicate glass at the torch

Torch flame and glass rod on the Treso Glass studio bench

Meet The Crew

The people behind the fire

Shayne runs the torch. These are the artists, studios and mentors who shaped the work.

Main focus

Shayne “Treso” Lefrancois

Treso Glass Artist / Flameworker

Handmade borosilicate glass, fume work, wearable pieces, functional forms, and one-of-a-kind art.

Shayne “Treso” Lefrancois is the artist behind Treso Glass, creating handmade borosilicate glass with a focus on flame work, fume technique, wearable pieces, functional forms, and one-of-a-kind art glass. His work is rooted in more than ten years behind the torch, beginning in Salem, Massachusetts, where he moved from glass enthusiast and collector into full-time flame worker.

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Collaborators

Dan Longden

Central Massachusetts Flameworker / Linework Specialist

Dan Longden is a Central Massachusetts flameworker known for colorful, highly controlled linework, including wig-wag, chip-stack, and incalmo techniques. His work carries forward classic functional glass traditions through bold pattern, precision, and deep respect for the craft.

Dan is a central-Massachusetts flameworker known for linework — wig wag, chip stack and incalmo — and for paying homage to the shapes that built modern pipe making while pushing color and form somewhere new. The Dan Longden x Treso rig pairs his line and form work with Treso's fume.

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Placeholder image — awaiting approved Witch DR logo/photo.

Witch DR Crew

Salem Glass Studio / Shop / Creative Collective

Witch DR is a family-owned and operated glassblowing studio based in Salem, Massachusetts. Opened in 2012, Witch DR has grown into a shop, wholesale showroom, private gallery, event space, and working flameworking studio featuring handmade American glass, live glassblowing, artists, classes, and community-driven events.

Family-owned Salem glass blowing studio and gallery, open since 2012, with live in-store blowing and American-made glass. Treso works out of the Witch DR studio, and a large part of the current catalog is released as Witch DR x Dr. Treso.

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