Fashion Jewelry-1

Fused Glass

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How can I get fused and/or broken ground glass labware apart?

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Please answer only if you are a lab tech/chemist/ or other such person who deals with these items and problems. Thanks!

More info:
I am working with Kjeldahl distillation flask with a sloped T-joint (an Eay-Dist apparatus setup) I tend to have problems with the ground glass of the T-joint fusing to the ground glass of the Kjeldahl tube. Recently we have started applying teflon grease between the joints which is helping but makes everything sticky! Yuck! ) I still have some Kjeldahl tubes/T-joints fused that I cannot get undone AND several Kjeldahl tubes that have the ground glass end of the T-joint broken off inside them. Does anyone have any suggestions as to how to unstick them or remove the broken and fused T-joint ends from the tubes? We have tried solvents, heating and cooling etc.. So far we only usually end up breaking the glass and cutting our fingers! LOL Any help or ideas welcome! Thanks! ) Chris

This is a common problem and there are several solutions, including mechanical and chemical methods.

The freezing of the joints is most often due to Sodium hydroxide solution getting into the joint during the experiment. If the solution is never allowed to "bump" into the joint, this problem will never happen.

One it has, boiling the apparatus in dilute (5% is fine) Nitric acid while making sure the joint is covered in the solution, will remove any Sodium hydroxide. Rinse in warm water.

Protect your hands with leather or other suitable gloves. Apply a gentle twisting motion. For the broken tubes, use a metal rod bent into a J-shape to tap the joint out.

You might also want to use a mechanical device to separate the joint. The cost of the device is less than that of glassware replacement (looking at the problem over time),

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How To Make Fused-Glass Pendants

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Be Fascinated With The Concept Of Fused Glass Wind Chime

The basic ingredients of glass have remained unchanged for thousands of years. Silica sand, lime and soda still make about 90 percent of the world's glass, but the production scale has been considerably increased to meet modern demands. Today's glassmakers scrupulously select tons of pure raw materials, weigh them to the ounce, thoroughly mix them and then feed the mixture, or batch, to gigantic tank furnaces that can hold more than 1,000 tons of molten glass.

Although added cullet, or scrap glass of the same formula to be manufactured, speeds the melting process, the furnace must be heated to about 2,800 degrees Fahrenheit! So corrosive is molten glass at this temperature that the process has been compared to melting a block of ice in a container of sugar. The heat-resistant furnace walls must usually be replaced every two to four years.

Appreciating the Creator of Glass Forms

Impressive as these complex machines may be, it is the glassblower who truly enthralls the watcher. Using a few simple tools and traditional skills of an ancient craft, this artisan persuades the liquid into articles of intricacy and beauty beyond the reach of automation.

The glassblowers function as a "shop" of six or seven men. First the "gatherer" takes the required amount of molten glass on the end of his blowing iron. About five feet long, this hollow iron pipe has a mouthpiece at one end and a knob at the other. To the inexperienced the blowpipe is a long, clumsy tube, but to the master glassblower it is the inseparable partner of an artist and his craft.

Obviously, as fascinating as glass blowing is, so is the creation of fused glass wind chime. Through burning and melting reforming and recoloring, the beauty of a created fused glass wind chime comes out in the open, enticing the human eye of the beauties that are most often than not directly affected by the sunlight that touches every piece of the fused glass wind chime that makes the beauty of the artistic piece into a wondrous view.

The effects that were used to make a fused glass wind chime luster with color and beauty makes the entire piece of crafted art a source of satisfaction to the eye of the maker and the vision of the ones who appreciate the said artistic forms of creation. Along with this, the creation of sea glass wind chime in collaboration with the creation of the fused glass wind chime makes a grand completion of the craftsman's creation.

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