Blown glass called a manufacturing technique of glassware by creating bubbles in the molten glass . These bubbles are obtained by injecting air into a piece of material through a long metal tube , either by machine or by hand, blowing out the other end , a system similar to that used to make soap bubbles .
The art of glass beads dates back to the very origin of the glass, Third Millennium BC, well before the invention of glass blowing cane . Glass beads are worked with the technique of glass torch manufacturing is spread evenly on a mandrel previously prepared separating a portion of special glass cast with the help of the torch once divided the glass remains only develop the typology or design you want to perform . The main tool in the torch are the hands of the artisan and their creativity.
Stages of production
The components are brought to the temperature in an oven which is generally dome shape and which has three parts:
The lower part which houses the fuel.
The intermediate portion where the melted mixture is placed .
The upper part, called the annealing chamber , where the products are allowed to cool slowly to room temperature .
The vitreous paste is in contact with the outside by an opening disposed around the oven , first you give the dough a cylindrical shape and then the operator takes a small amount of pasta with the cane usually between a meter and a Metro forty five in length, and through it the craftsman begins to blow in order to give the desired shape , so that the object never loses malleability , which produces the heat of the oven. At this stage molds can be used to accelerate the process of blowing, to do it directly in the molds. Once this modeling process , the glass object is placed in the annealing furnace where it continues cooking at lower temperatures and gradually to avoid cracking or breakage due to sudden changes in temperature.
With the technique of glass torch we can make beads necklace , beads, perfume bottles and small figures . We use different types of glass , however , the best known of all is the Italian glass , popularly known as Murano glass . This glass is characterized by its color intensity , when light filters through it, make fantastic sensations.
history
Its first use , dating back to ancient times , was for items of costume jewelry . Adding various minerals in the molten beads of different colors , sizes and shapes are obtained .
The art of glass beads dates back to the very origin of the glass, Third Millennium BC, well before the invention of glass blowing cane . Glass beads are worked with the technique of glass torch manufacturing is spread evenly on a mandrel previously prepared separating a portion of special glass cast with the help of the torch once divided the glass remains only develop the typology or design you want to perform . The main tool in the torch are the hands of the artisan and their creativity.
In Spain , one of the greatest exponents of glassblowing Don Faustino was Martin Plaza (1932-2007) , which won the Interprovincial I Glass Blowing Contest Chemist at 1973 .
