All About Glass

All About Glass

This is your resource for exploring various topics in glass: delve deeper with this collection of articles, multimedia, and virtual books all about glass. Content is frequently added to the area, so check back for new items. If you have a topic you'd like to see covered, send us your suggestion. If you have a specific question, Ask a Glass Question at our Rakow Research Library.

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Vasenpokal | Techniques of Renaissance Venetian-Style Glassworking
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This video shows the vessel being made in a sequence of steps, one of which includes the use of a full-size blow-mold. The manufacturing process for the lid is then shown. Learn more about this object in The Techniques of Renaissance Venetian-Style Glassworking by William Gudenrath. Between about

Turquoise Pot | Techniques of Renaissance Venetian-Style Glassworking
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This video begins with the making of the different canes and bands required. After these elements are rolled up on the end of a blowpipe, the open-ended cylinder is lined with colorless glass using the sbruffo method. Glassblowing is then employed to make the vessel. The handle is fashioned from

Swedish Covered Goblet | Techniques of Renaissance Venetian-Style Glassworking
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This video shows, first, the four elements of the goblet and a fifth element for the finial of the lid being made and placed in an oven. Next, the assembly process begins. After the foot element has been attached to a pontil, the other parts are added and adhered together using small amounts of

Verzelini Goblet | Techniques of Renaissance Venetian-Style Glassworking
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This video shows the three parts—bowl, stem, and foot—attached directly from above without the use of mereses, which are more conventionally employed. Learn more about this object in The Techniques of Renaissance Venetian-Style Glassworking by William Gudenrath Between about 1500 and 1725, Venice

Openwork Goblet | Techniques of Renaissance Venetian-Style Glassworking
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In this video, first the bowl or cup is blown of colorless glass. Next, a series of solid and hollow elements are stacked, interrupted by three straps that create an open-work structure. Tiny raspberry prunts are added, and then a blown foot is attached. Finally, the rim is created while the vessel

Beaker | Techniques of Renaissance Venetian-Style Glassworking
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This video shows first the two types of required canes being made and arranged in a pattern on a ceramic plate. After the canes are fused together, a thick, cylindrical bubble of glass is rolled over the canes so that they become attached. After reheating, glassblowing is used to make the beaker.

Winged Glass | Techniques of Renaissance Venetian-Style Glassworking
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A partly hollow combination merese/avolio construction is added to the tip of a bubble of glass that eventually becomes the bowl (or cup). A complex, multi-part stem and foot are then attached. The vessel is completed while it is held by a pontil. Learn more about this object in The Techniques of

Stangenglas | Techniques of Renaissance Venetian-Style Glassworking
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This video shows retortoli canes being made and cut, then placed on a ceramic place-holding plate and then pre-heated. Next, a thick cylindrical bubble of glass is rolled over the canes, thus embedding them in its surface. Glassblowing is then used to make the vessel and its foot. Learn more about

Swiss Goblet | Techniques of Renaissance Venetian-Style Glassworking
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This video shows white canes of a small diameter being made. Next, the pre-heated canes are rolled up on the exterior of a thick-walled, cylindrical bubble of glass. This is then formed into a preliminary stem and foot construction, to be used later in the manufacturing process. The bowl is blown

Ferdinand II Beaker | Techniques of Renaissance Venetian-Style Glassworking
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This video shows the making of the vessel body and a small blown-foot with a folded edge. At the end of the glassblowing processes, a fin-mold is used to transform the upper-half of the vessel and the rim from a round to hexagonal shape. Learn more about this object in The Techniques of Renaissance

Bill Gudenrath Live-streamed Studio Demonstration (January 2019)
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An expert on Venetian glass, William Gudenrath taught students in his January 2019 class how to create well-formed and thinly-blown vessel bodies, excellent necks, delicate mereses, and blown feet and stems. In this demo from January 16, Gudenrath shares his knowledge of reticello —a type of blown

The Grand Bohemian Troupe of Fancy Glass Workers | Behind the Glass Lecture
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See The Grand Bohemian Troupe of Fancy Glass Workers at The Corning Museum of Glass! Over a span of 300 years, traveling flameworkers entertained and educated audiences around the world on the art, s­­cience, and skill of glassmaking. Learn about their lives and witness a modern take on their

Megan Stelljes Guest Artist Demonstration at 2300°
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Get ready to warm things up with Guest Artist Megan Stelljes in the Amphitheater Hot Shop during January's 2300°. In this demo, Stelljes creates a wine barrel with grapes to compliment the evening's wine tasting theme. See the final object out of the annealer starting at 1:40:51. Stelljes

Fred Kahl Live Streamed Studio Demonstration
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A pioneer in three-dimensional digital design, artist Fred Kahl is teaching students in his class how to create reusable graphite molds for glass casting. Get an insider’s view into the process during this live stream from the class Design, Carve, Pour on January 9. See the final piece starting at

David Sandidge Guest Artist Demonstration
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Watch as flameworker David Sandidge brings his fanciful glass figures to life during this demonstraton on January 11, 2019. See the final work starting at 1:56:20. The Guest Artist Series features world-class visiting artists at work in the Amphitheater Hot Shop. These special, extended

Penelope Rakov Live Streamed Studio Demonstration
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Artist Penelope Rakov was recently an artist-in-residence at The Studio where she focused on making murrine. Now as an instructor at The Studio, Rakov taught her students how to create different styles of murrine and how colors work together. Watch this January 23 live stream from the class Maximum

Tumblers, part 2
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In this video, artist Boyd Sugiki continues his discussion on tumblers and presents a demonstration including how to stretch the form, adjust pressure, straighten, thin and open the lips, and match heights to create a set. This video was produced by Boyd Sugiki in collaboration with The Studio at

Tumblers, part 1
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In this video, artist Boyd Sugiki discusses creating tumblers by working thinner, the turning speed, temperature and heat, color overlays, even stretching. This video was produced by Boyd Sugiki in collaboration with The Studio at The Corning Museum of Glass.

Turning
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In this video, artist Boyd Sugiki discusses turning basics including adjusting the speed of the turn and turning styles for different situations. This video was produced by Boyd Sugiki in collaboration with The Studio at The Corning Museum of Glass.

Vienna 1900, The Heart of Modernity | Behind the Glass Lecture
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Vienna in 1900 was at the heart of European modernity as a unique set of circumstances gave rise to a new and modern life there. Watch Janis Staggs, director of curatorial and manager of publications at the Neue Galerie in New York, explore this rich period in history. This Behind the Glass lecture

December 2300° Guest Artist Demo featuring Todd Ortega, Nikolai Morse, Jason Howard & Scott Griffin
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Happy Holidays from The Corning Museum of Glass! Watch the demo from the December 2018 2300° event featuring Todd Ortega, Nikolai Morse, Jason Howard, and Scott Griffin. In this demo, they construct a glass holiday tree with ornaments. The Guest Artist Series features world-class visiting artists

Practical Applications of Tension in Glass
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"Annealed glass," "safety glass," "tempered glass"... Confused? Learn the differences through these Glass Breaking Demos.

Glass Ribbon Machine
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Watch one of the world's fastest machines in action. After Thomas Edison developed a practical and durable light bulb filament in 1879, it took time for this technology to take hold, in part because it required a new product: glass envelopes to surround the filament. When Edison first

Bridging Glass Art and Science | Behind the Glass Lecture
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Dr. Jane Cook moved four years ago from the anonymity of a bench scientist in Corning Inc.’s research laboratory to become a sought-after lecturer, consultant, teacher, and advisor to artists, curators, educators, and the public, at The Corning Museum of Glass and around the world. In this Behind

2300°
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At 2300°F, hot glass gets interesting—and so do things at The Corning Museum of Glass. Check out this event every third Thursday from November to March. Learn more at https://www.cmog.org/2300

Helena Welling and Juha Saarikko Guest Artist Demonstration (Oct 19, 2018)
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Watch Helena Welling and Juha Saarikko, Finnish glassmakers from the Iittala factory, in a live narrated demonstration in The Studio on October 19, 2018. The glassmakers produced bird designs by internationally recognized designer Oiva Toikka. See the final birds at 13:09, 42:40, and 1:45:35. The

Aaron Jack & Anna Knoll Guest Artist Demonstration
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Watch live as Aaron Jack collaborates with glass cutter Anna Knoll in the Amphitheater Hot Shop on August 23 from 6 to 8 pm. Together they will create a one-of-a-kind piece that will incorporate both of their artistic styles.

McElheny Untitled (White)
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Listen as curator Tina Oldknow, describes the object Untitled (White)  by American artist Josiah McElhany. Josiah McElheny is an accomplished glassblower who creates installations inspired by art or glass history, often using a specific historical or literary anecdote as a point of departure. His

Optic Molding
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This technique was invented by Roman glassworkers. It was indispensable in glasshouses of the Middle Ages and flourished in Venice. Also known as dip molding, it remains popular today.

Gladiator Cup with Handles
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The Chavagnes gladiator cup, made in the mid-first century A.D., was found in eastern France, and it is now part of the CMoG collection. It shows pairs of gladiators in combat, and some of their names are known from literary and epigraphic sources. This sports cup, blown in a mold with two vertical

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