Crystal engraved awards can lead the consumer to a multitude of choice selections to be made. The crystals themselves have two distinct classes that consist of leaded or optical types. Leaded crystals are the traditional pieces that we see in high end shops. Optical crystals are made one hundred percent lead free and present with a high luster surface finish.
Leaded crystals are created by adding lead oxide to the glass formula. The lead component is generally around twenty four percent for optimum color, weight and hardness. This number also ensures the clarity of the glass will remain at optimum levels. They are highly valued and many become family treasures that are passed down for generations.
On the other hand optical crystals have no lead in them. The glass is manufactured in three inch thick sheets and is known for the brilliant appearance that comes after they are polished. All optical crystals are beveled and polished prior to distribution. The manufacturer also removes all flaws from the sheet while it is still a molten liquid by applying tremendous pressure on the surface. This process squeezes out any bubbles or ripples that may occur.
Both types of crystals can be engraved with the same techniques. There are several popular and effective methods of doing this. By far the most popular method for engraving is sand blasting. This technique uses thousands of tiny sand particles directed at the desired design at very high pressure. Most artists will use a stencil to guide the work being done. The result is an intricate and delicate image that demands attention. Sand etching has been in use for over twenty years and gives smooth uniform cuts that have a very high class look.
A very labor intensive method is known as wheel engraving. This is by far the most difficult method to learn for artists and takes years of practice to become a master. There are different sizes of wheel that are used and they are stationary while the piece of glass is moved to create the image. This technique is still used today but only for small high end markets.
Another technique that is disappearing is chemical, or acid, etching. The fumes from the acid used have proven to be very dangerous to the health of workers who use it. The end result of this technique is thought by many to be far more satisfactory to the trained and untrained eye. The edges are softer and the finish has a hazy matte gloss that cannot be accomplished otherwise. Few craftsmen use this method of etching today.
Lasers are the newest means of engraving available. With this method a laser beam is directed at the surface of the item and through a multitude of dots creates the desired image. Many feel that it does not do a satisfactory job on leaded crystal surfaces. They feel that the laser damages the surface because of the intense heat it creates. Amazingly, they can be used to create an image inside of an article without any surface disturbance.
The cost of crystal engraved awards can vary greatly dependant on the technique your artist uses. If you choose optical materials the laser is more economical for large numbers of items. For smaller orders leaded crystals and sand etching may be your first choice.
Leaded crystals are created by adding lead oxide to the glass formula. The lead component is generally around twenty four percent for optimum color, weight and hardness. This number also ensures the clarity of the glass will remain at optimum levels. They are highly valued and many become family treasures that are passed down for generations.
On the other hand optical crystals have no lead in them. The glass is manufactured in three inch thick sheets and is known for the brilliant appearance that comes after they are polished. All optical crystals are beveled and polished prior to distribution. The manufacturer also removes all flaws from the sheet while it is still a molten liquid by applying tremendous pressure on the surface. This process squeezes out any bubbles or ripples that may occur.
Both types of crystals can be engraved with the same techniques. There are several popular and effective methods of doing this. By far the most popular method for engraving is sand blasting. This technique uses thousands of tiny sand particles directed at the desired design at very high pressure. Most artists will use a stencil to guide the work being done. The result is an intricate and delicate image that demands attention. Sand etching has been in use for over twenty years and gives smooth uniform cuts that have a very high class look.
A very labor intensive method is known as wheel engraving. This is by far the most difficult method to learn for artists and takes years of practice to become a master. There are different sizes of wheel that are used and they are stationary while the piece of glass is moved to create the image. This technique is still used today but only for small high end markets.
Another technique that is disappearing is chemical, or acid, etching. The fumes from the acid used have proven to be very dangerous to the health of workers who use it. The end result of this technique is thought by many to be far more satisfactory to the trained and untrained eye. The edges are softer and the finish has a hazy matte gloss that cannot be accomplished otherwise. Few craftsmen use this method of etching today.
Lasers are the newest means of engraving available. With this method a laser beam is directed at the surface of the item and through a multitude of dots creates the desired image. Many feel that it does not do a satisfactory job on leaded crystal surfaces. They feel that the laser damages the surface because of the intense heat it creates. Amazingly, they can be used to create an image inside of an article without any surface disturbance.
The cost of crystal engraved awards can vary greatly dependant on the technique your artist uses. If you choose optical materials the laser is more economical for large numbers of items. For smaller orders leaded crystals and sand etching may be your first choice.
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