http://www.talkglass.com/wiki/api.php?action=feedcontributions&feedformat=atom&user=Gnimelf 2026-04-16T16:10:23Z User contributions MediaWiki 1.18.0 http://www.talkglass.com/wiki/index.php?title=Vittorio_Costantini 2007-05-07T18:37:35Z

<p>Gnimelf: </p> <hr /> <div>'''Vittorio Costantini''' is a Venetian flameworking maestro, known for his amazingly detailed glass insects, birds, and sea creatures. Son of a fisherman and a lace maker, Vittorio was born on the island of Burano in the Venetian lagoon and raised with an appreciation for the small animals which inhabited the lagoon where his father worked every day.<br /> <br /> At the age 11, Vittorio initially began working hot glass at the furnace as an apprentice. Flameworking became a hobby which he practiced in the evenings. At age 29, Vittorio opened his own studio on the island of Venice and began concentrating fully on his flameworking.<br /> <br /> In this photo, Vittorio is making an octopus at the torch, using a very thin stringer of glass to add individual suckers to each leg on the octopus.<br /> <br /> [[Image:vittorio_costantini1.jpg]]<br /> <br /> Photo credit: Wesley Fleming, 2004<br /> <br /> This photo is of one of the display cases in Vittorio's studio on Fondamenta Nuove in Venice. He is obviously quite prolific!<br /> <br /> [[Image:vittorio_costantini2.jpg]]<br /> <br /> Photo credit: Wesley Fleming, 2004</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=File:Vittorio_costantini2.jpg 2007-05-07T18:36:52Z

<p>Gnimelf: case of work in Vittorio Costantini's shop.</p> <hr /> <div>case of work in Vittorio Costantini's shop.</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=File:Vittorio_costantini1.jpg 2007-05-07T18:36:13Z

<p>Gnimelf: Vittorio Costantini, making an octopus</p> <hr /> <div>Vittorio Costantini, making an octopus</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=Annealing 2007-05-07T18:32:37Z

<p>Gnimelf: </p> <hr /> <div>'''Annealing''' is the process of relieving stress built up the a piece of glass as the result of uneven cooling. In modern times, electric kilns with digitally-controlled cooling programs are used to cool the glass at a sufficiently slow rate after the glass has been held at its annealing temperature for long enough that all stress has been relieved.<br /> <br /> Previous to the advent of electric kilns, gas- or wood-fired kilns were used to anneal the glass. Such kilns required constant attention of someone to both monitor and control the temperature of the glass at any given time. In some cases, temperature of the glass was changed simply by incrementally moving the glass further from the heat source inside of the kiln (see photo.)<br /> <br /> Unannealed glass must be considered unstable, as even subtle changes in environmental temperature or pressure could potentially trigger the latent stress in the glass to increase just enough to trigger cracking or, sometimes, even explosive shattering of the glass.<br /> <br /> Following is a photo of goblets being annealed in a gas-fired kiln at a glassblowing studio in Murano, Italy. The forked pole is used to pick goblets up and move them further away from the heat source inside of the kiln as the temperature evens out inside of each goblet.<br /> <br /> [[Image:Goblets_in_gas-fired_kiln.jpg]]<br /> <br /> Photo credit: Wesley Fleming, 2004<br /> <br /> This photo shows a wider view of the bank of kilns in this Murano studio. Although these kilns are now gas-fired, they were previously wood-fired. A fireplace is visible underneath each kiln - the exhaust (chimney) was directed up through the kilns to heat them.<br /> <br /> [[Image:gas-fired_kilns.jpg]]<br /> <br /> Photo credit: Wesley Fleming, 2004</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=File:Gas-fired_kilns.jpg 2007-05-07T18:32:00Z

<p>Gnimelf: gas-fired kilns, converted from wood-fired kilns</p> <hr /> <div>gas-fired kilns, converted from wood-fired kilns</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=File:Goblets_in_gas-fired_kiln.jpg 2007-05-07T18:29:29Z

<p>Gnimelf: goblets being annealed in a gas-fired kiln</p> <hr /> <div>goblets being annealed in a gas-fired kiln</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=Annealing 2007-04-27T01:23:28Z

<p>Gnimelf: </p> <hr /> <div>'''Annealing''' is the process of relieving stress built up the a piece of glass as the result of uneven cooling. In modern times, electric kilns with digitally-controlled cooling programs are used to cool the glass at a sufficiently slow rate after the glass has been held at its annealing temperature for long enough that all stress has been relieved.<br /> <br /> Previous to the advent of electric kilns, gas- or wood-fired kilns were used to anneal the glass. Such kilns required constant attention of someone to both monitor and control the temperature of the glass at any given time. In some cases, temperature of the glass was changed simply by incrementally moving the glass further from the heat source inside of the kiln (see photo.)<br /> <br /> Unannealed glass must be considered unstable, as even subtle changes in environmental temperature or pressure could potentially trigger the latent stress in the glass to increase just enough to trigger cracking or, sometimes, even explosive shattering of the glass.<br /> <br /> Following is a photo of goblets being annealed in a gas-fired kiln at a glassblowing studio in Murano, Italy. The forked pole is used to pick goblets up and move them further away from the heat source inside of the kiln as the temperature evens out inside of each goblet.<br /> <br /> [[Image:http://www.wesleyfleming.com/murano_2005/DSCF2291.jpg]]<br /> Photo credit: Wesley Fleming, 2004<br /> <br /> This photo shows a wider view of the bank of kilns in this Murano studio. Although these kilns are now gas-fired, they were previously wood-fired. A fireplace is visible underneath each kiln - the exhaust (chimney) was directed up through the kilns to heat them.<br /> <br /> [[Image:http://www.wesleyfleming.com/murano_2005/DSCF2294.jpg]]<br /> Photo credit: Wesley Fleming, 2004</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=Vittorio_Costantini 2007-04-27T01:17:37Z

<p>Gnimelf: </p> <hr /> <div>'''Vittorio Costantini''' is a Venetian flameworking maestro, known for his amazingly detailed glass insects, birds, and sea creatures. Son of a fisherman and a lace maker, Vittorio was born on the island of Burano in the Venetian lagoon and raised with an appreciation for the small animals which inhabited the lagoon where his father worked every day.<br /> <br /> At the age 11, Vittorio initially began working hot glass at the furnace as an apprentice. Flameworking became a hobby which he practiced in the evenings. At age 29, Vittorio opened his own studio on the island of Venice and began concentrating fully on his flameworking.<br /> <br /> In this photo, Vittorio is making an octopus at the torch, using a very thin stringer of glass to add individual suckers to each leg on the octopus.<br /> <br /> [[Image:http://www.wesleyfleming.com/murano_2005/DSCF2401.jpg]]<br /> Photo credit: Wesley Fleming, 2004<br /> <br /> This photo is of one of the display cases in Vittorio's studio on Fondamenta Nuove in Venice. He is obviously quite prolific!<br /> <br /> [[Image:http://www.wesleyfleming.com/murano_2005/DSCF2316.jpg]]<br /> Photo credit: Wesley Fleming, 2004</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=Annealing 2007-04-27T00:54:55Z

<p>Gnimelf: </p> <hr /> <div>'''Annealing''' is the process of relieving stress built up the a piece of glass as the result of uneven cooling. In modern times, electric kilns with digitally-controlled cooling programs are used to cool the glass at a sufficiently slow rate after the glass has been held at its annealing temperature for long enough that all stress has been relieved.<br /> <br /> Previous to the advent of electric kilns, gas- or wood-fired kilns were used to anneal the glass. Such kilns required constant attention of someone to both monitor and control the temperature of the glass at any given time. In some cases, temperature of the glass was changed simply by incrementally moving the glass further from the heat source inside of the kiln (see photo.)<br /> <br /> Unannealed glass must be considered unstable, as even subtle changes in environmental temperature or pressure could potentially trigger the latent stress in the glass to increase just enough to trigger cracking or, sometimes, even explosive shattering of the glass.<br /> <br /> Following is a photo of goblets being annealed in a gas-fired kiln at a glassblowing studio in Murano, Italy. The forked pole is used to pick goblets up and move them further away from the heat source inside of the kiln as the temperature evens out inside of each goblet.<br /> <br /> [[Image:http://www.wesleyfleming.com/murano_2005/DSCF2291.jpg]]<br /> Photo credit: Wesley Fleming, 2004</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=Annealing 2007-04-27T00:47:44Z

<p>Gnimelf: </p> <hr /> <div>'''Annealing''' is the process of relieving stress built up the a piece of glass as the result of uneven cooling. In modern times, electric kilns with digitally-controlled cooling programs are used to cool the glass at a sufficiently slow rate after the glass has been held at its annealing temperature for long enough that all stress has been relieved.<br /> <br /> Previous to the advent of electric kilns, gas- or wood-fired kilns were used to anneal the glass. Such kilns required constant attention of someone to both monitor and control the temperature of the glass at any given time. In some cases, temperature of the glass was changed simply by incrementally moving the glass further from the heat source inside of the kiln (see photo.)<br /> <br /> Unannealed glass must be considered unstable, as even subtle changes in environmental temperature or pressure could potentially trigger the latent stress in the glass to increase just enough to trigger cracking or, sometimes, even explosive shattering of the glass.<br /> <br /> [[Image:http://www.wesleyfleming.com/murano_2005/DSCF2291.jpg]]<br /> Photo credit: Wesley Fleming, 2004</div>

Gnimelf http://www.talkglass.com/wiki/index.php?title=Annealing 2007-04-27T00:46:32Z

<p>Gnimelf: </p> <hr /> <div>'''Annealing''' is the process of relieving stress built up the a piece of glass as the result of uneven cooling. In modern times, electric kilns with digitally-controlled cooling programs are used to cool the glass at a sufficiently slow rate after the glass has been held at its annealing temperature for long enough that all stress has been relieved.<br /> <br /> Previous to the advent of electric kilns, gas- or wood-fired kilns were used to anneal the glass. Such kilns required constant attention of someone to both monitor and control the temperature of the glass at any given time. In some cases, temperature of the glass was changed simply by incrementally moving the glass further from the heat source inside of the kiln (see photo.)<br /> <br /> Unannealed glass must be considered unstable, as even subtle changes in environmental temperature or pressure could potentially trigger the latent stress in the glass to increase just enough to trigger cracking or, sometimes, even explosive shattering of the glass.<br /> <br /> [[Image:http://www.wesleyfleming.com/murano_2005/DSCF2291.jpg]]</div>

Gnimelf