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Denver Glass Academy

1556 S Broadway, Denver

A One-Hour Glassblowing Class for One or Two at Denver Glass Academy (Up to 49% Off)

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Class covering the history of modern glassblowing, torch safety, and color application gives students a hands-on experience in the art

Customer Reviews

100% Verified Reviews
All reviews are from people who have redeemed deals with this merchant.
date night
fun experience
beginner class
Rebeccatop reviewer
52 ratings32 reviews
April 9, 2020
SO...MUCH...FUN!!!! Highly recommend!
2 ratings1 reviews
February 20, 2020
Fun experience. Codey is a wonderful instructor-- knowledgable, patient, and well-versed in her craft. Recommend highly!
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7 ratings1 reviews
February 8, 2020
So much fun. Cody was very knowledgable and passionate about glass blowing.
Lizhelpful reviewer
1 ratings1 reviews1 photos
December 20, 2019
Fantastic! Was a great date night. Very beginner friendly and Cody was very easy going and fun. We want to take another class soon!
4 ratings1 reviews
December 12, 2019
Codey was great and we had a lot of fun
1 ratings1 reviews
December 8, 2019
Loved it!!
Robhelpful reviewer
7 ratings3 reviews
November 29, 2019
Was fun and interesting bonding time with wife doing something different.
3 ratings2 reviews
November 25, 2019
The instructor was super nice and walked us through everything with easy to follow instructions. Definitely something different to do and it was a great environment. I highly suggest this class especially if you like the idea of glass blowing or glass creations in general. My husband and I definitely plan on going back and it was a great gift for him for our anniversary!
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About This Deal

Choose Between Two Options

  • $51 for a one-hour glassblowing class for one ($100 value)
  • $108 for a one-hour glassblowing class for two ($200 value)

Click here to view the glass fusing class offer.

Glass Blowing: From Bubbles to Baubles

Based in simple chemistry, the techniques behind glass blowing have barely changed in 2,000 years. Read on to clarify your understanding of the science of stemware.

At the base of the torch, a pool of liquid simmers at more than 2,000 degrees Fahrenheit. Armed with only a hollow tube and a few deep breaths, an artist can shape this glowing liquid into colorful pieces of art ranging from vases and pipes to sculptures and useless swords. Forming a solid structure from a liquid may seem like medieval alchemy, but it’s all possible thanks to the unique properties of glass. Though virtually solid at room temperature, glass has a molecular structure closer to that of a liquid, with a relatively random organization of molecules rather than a rigid, orderly arrangement. In fact, purists would describe glass as a super-cooled liquid with such a high viscosity that it resembles a normal solid. When heated, the materials that make up glass—typically silicon dioxide (sand), sodium oxide (soda), and calcium oxide (lime)—soften, allowing a glassblower, or gaffer, to manipulate the mixture’s shape in its molten form. Once cooled, the glass retains its shape—until, of course, it shatters when an opera singer hits a high note and drops it on the floor.

Since most glass is naturally transparent, a gaffer must add metal oxides to the molten blend to give it color. Different metals determine the hue of the final product: cobalt lends the glass a blue tone, gold a ruby red sheen, and manganese an amethyst tint. Next, they dip their metal pipe into the furnace, letting a layer of the liquid build up on the end, and cool the other end of the tube in ice water or day-old coffee so they can blow into it, causing the glass to form into a bubble. As the artisan shapes this bubble through a variety of methods, they must constantly rotate the pipe, applying centrifugal force so as to prevent the (not-yet-solid) glass from dripping.

Fine Print

Promotional value expires 120 days after purchase. Amount paid never expires. Must be 18 or older. Online reservation required. Booking calendar can be booked out 2-4 weeks in advance; if the calendar appears full more dates are released periodically. Groups larger than two people cannot be purchased through Groupon; please contact Denver Glass Academy to purchase classes larger than two people. Limit 1 per person, may buy 1 additional as gift(s). Valid only for option purchased. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

About Denver Glass Academy