Shop Glass Supplies
Bullseye Glass
Explore a wide selection of Bullseye reactive glass, including frit, rods, powders, and sheets. Browse our collection and get expert advice from experienced glassworkers with decades of knowledge.
Torchwork Supplies
Find everything you need for torchworking, whether you're using Pyrex borosilicate, Effetre, Bullseye, or Satake soft glass. Shop our extensive selection of glass rods, tubes, and essential tools to support your craft.
Stained Glass Supplies
Find all your stained glass supplies here, including patinas, solder, lead, zinc, flux, and a wide variety of tools. Then discover Kokomo, Wissmach, Youghiogheny, Ruth Glass, Bullseye, Oceanside, Lamberts, and vintage & rare glass, all here at Potekglass.
Repairs & Custom Work
Preserve your stained glass windows, repair Tiffany-style shades, and restore bent lamp panels with expert care. Our skilled artisans bring unmatched expertise to every repair, ensuring your stained glass treasure is beautifully restored. With experience in a wide variety of repairs, we deliver the best solutions to protect and revive your stained glass. Looking for a custom stained glass window?
Contact us today to discuss your vision!
If you like color, you'll love working with glass.
Your trusted source for stained glass. Expert advice, in person help, or email support here for you every step of the way!
Browse Classes
Torch Classes
Learn the tricks of the trade for creating art on the torch. Borosilicate and soft glass classes teach the specifics for individual glass technologies. Learn glass blowing, sculpture, and beadmaking for the hot glass worker.
Kiln & Stained Glass Classes
Learn the art of cutting and firing glass in the kiln! In these courses students will learn to cut patterns out of sheet glass, understand firing schedules, and work with a variety of glass formats to design with glass.
From Our Customers!
"We took the Basics from Boron class here. Malcolm was a great, easy-going instructor who adapted to each person's needs and made the experience both safe and fun. We went in having never worked with glass before but came out feeling like we had enough of the basics to come into one of their open sessions to play around and come up with some of our own glass creations. Lots of fun. Highly recommended."
— David Armstrong
"I took the Beginner’s Stained Glass. I appreciated an experienced and skilled expert teaching the class, answering questions that have come up many times before."
— Sarah Collins
I heard about Potekglass when I called another glass company to try and track down some stained glass. I would definitely recommend Potek to a friend. I think it's so valuable to have workshops and lessons like those you offer.
— Lisa Franchette
"I was really happy with the class. Malcolm is obviously used to working with beginners and non-artists."
— Emily Harper
"Malcolm was knowledgeable, laid back, and had a great sense of humor. Didn’t get impatient with my inability to light my torch! Always helpful. Great class."
— Jonathan Pierce
"So much fun (even though I wasn’t very good). Everyone I told about it was envious. I hope to come back for another class!"
— Olivia Reed
"Malcolm is an amazing instructor. Great music selection during class :)"
— Natalie Scott
"Great experience for all ages. We had an 11-year-old plus 2 adults taking the class and everyone enjoyed it."
— Michael Brooks
From Our Family to Yours
We are dedicated to your artistic pursuits in glass. Whether you are looking for a signature piece of stained glass or want to create your own fused glass platter, we have a staff with over 50 years of combined experience in creating, repair and teaching in the glass crafts. Learn from the best, get expert advice on supplies or pursue your own work independently in our studio. Just want to have a good time? Schedule a team-building art experience, community art, or corporate event.
Based in Minneapolis, Minnesota, Potekglass was founded by artist and glass worker Malcom Potek. Whether you're looking for glass art, lighting elements, or custom architectural glass pieces, Potekglass is committed to quality design, exceptional service, and helping people experience the beauty of glass.
Custom Projects and Artwork
At Potekglass, we love helping architects and interior designers realize their client's vision for their commercial or residential spaces. Collaborating with design professionals to create the perfect enhancements to their designs is our specialty.
Artist in the World
ARTIST SPOTLIGHT: Dieterich Spahn
Dieterich Spahn was a beloved stained glass artist and painter, born in Cologne, Germany in 1938 and living in Minneapolis, MN before passing away in 2021. With a full stained glass career of more than 5 decades of artistry, Spahn created work that can be seen in over 200 places of worship, hospitals, universities, libraries and private residences throughout the United States. The University of St. Thomas and St. John’s Abbey house some of his most notable work.
Spahn began pursuing his glass studies in Düsseldorf, producing his first experimental panels in 1958. He traveled extensively throughout Europe as he developed his glass repertoire, paying special attention to the effect of light through colored glass in architecture as he went. Upon an invitation to join the Peter Dohmen studio in St. Paul in 1961, he moved to Minnesota and continued his artistic and entrepreneurial pursuits here.
CONTINUED: Dieterich Spahn
“I kinda like subtleties … When you look at life, life is very seldom big events.”
Much of Spahn’s work is known for its ability to shift with the viewer’s perspective, creating a unique experience with each viewing due to the layered texture and selective color shifts he employed. Spahn was also known for beginning research years before a project was to be completed and consulting personally with both architects and clients to ensure a design would achieve the highest excellence possible.
The repair team at Potekglass is currently in the process of restoring a window designed by Dieterich Spahn from Emmanuel Lutheran Church! Keep an eye on our Facebook (@Potekglass) and Instagram (@potek_glass) for upcoming posts with more details.
Team-Building Glass Art
Onsite School Fieldtrips
Potekglass offers introductory classes to students in elementary and middle school. Students can participate as a class or individually. Summer art camps available.
Corporate Events
Your company’s targets and core values will guide the group in developing a meaningful piece of art made for display in your place of work.
Artist In Residence
With 15+ years of experience developing educational residencies, we have a love of teaching that gets everyone involved and excited for the problem-solving needed to pull off these public art projects.