Czech Glass Factory Tour | PotomacBeads
Czech Glass Factory Tour
28 May, 2009 by
Czech Glass Factory Tour
PB - Admin

We recently had the privilege of touring several of our Czech glass supplier’s factories in the Czech Republic, giving us the ability to both take photographs and learn more about how our beads are made. This page specifically highlights the manufacturing techniques for pressed glass beads and firepolished glass beads. Additional links to other czech glass manufacturing are available below.

Most Czech Glass made today is manufactured in the the “Liberec” region, primarily in Jablonec, Prosec, Liberec, and several other small surrounding towns and villages. This area of the Czech Republic is located in the far northern reaches of the country, situated less than 30 miles from both Germany & Poland. The photograph below shows the snowcapped mountains that border the countries and that have created a natural border for hundreds of years.

The architecture, food, culture, & lifestyle of this region is ‘bohemian’ and will remind many of Bavaria. Glass has been made in these cities for hundreds of years, beginning in the 18th century, and growing and prospering into the 20th century. Around the region, one will see hundreds of little workshops like the one featured below behind homes. Historically, these were used for melting, faceting, and firepolishing the beads. All of this was done in these workshops which featured a hardwood-fired stove for the melting & firepolishing. Even today (and depending upon the size of the order), much of the work done in the Czech Republic is broken up by the factory and given to individuals or families who produce the beads and return the finished products to the factory. For more information on classic firepolishing techniques, see our classic firepolishing page .

The second world war sent many German artisans from the area back to Germany, but many artists remained, and continued their trait even through the Cold War. The fall of the wall in Berlin just 20 years ago has caused a great re-vitalization of industry in the region and more widespread acclaim and demand for Czech glass worldwide.

There are many different styles of Czech glass beads, but most can be broken down into one of three categories: Pressed Beads, Firepolished Beads, and Table-cut Beads. There are of course also seed beads & machine cut crystal made in the Czech Republic, but we shall focus on the first three styles. All firepolished and table cut beads first start as a pressed bead, and all Czech beads first begin with one or several of the different colors of glass rods featured above and below.

These glass rods are each about 3 inches in diameter and about 3 feet long. They come in dozens of different color varieties, and can also be mixed together in the kilns to create new colors. In all, hundreds of different color varieties are available. Fortunately for us, most factories use the same item numbers to track colors and shapes. The color card below lists many of the colors that are available for shape 151-99054. This shape’s colors are listed on the sheet. For example color 60060 (towards the bottom) is typically called “sapphire.’ Color 60070 would be slightly darker, and color 60050 would be slightly lighter. The item above that (60010/28701) is a lighter blue with the 28701 finish. The items above that have the AB finish (#27001).

The company ordering the beads will have color, shape, and finish sheets at their disposal so that they can order beads that are identical to previous orders. To make the faceted firepolished beads shown above starts with a glass rod entering the pressing machine:

As this glass rod is into the pressing machine (below), the kiln portion turns the hard rod into molton glass. In this method, several colors can also be mixed together. As the glass becomes liquid it is dripped down in a molton stream where it is pressed or stamped by two identical molds into the desired shape. The photo below shows the pressing occuring, then cooling after being pressed.

The picture below shows the pressing process up close. The room where the pressing what taking place was fairly dark, and the photograph is a bit blury, but you can make out the molton stream coming from the top, then being pressed by the mold in the center, and beginning to cool at the bottom.

The image below shows one half of one of the molds, which presses four round beads and their holes as in one stamping motion as the two molds come together.

As the glass continues down the shoot and cools, it is then broken into more manageable pieces and fed into a bucket.

What this pressing process has created can be seen below. The shape has been pressed into the glass (round beads in this case), and will be tumbled to break off the outer portions and separate the desired bead shape from the scraps.

The shape below is often called a ‘dagger’ or ‘drop’. Like the rounds, the desired shape will be separated from the scraps through the tumbling process. In this case, these beads had a mix of red and black rods to creat the color you see, and the mix means that each bead is unique.

Here is another example of round beads once they have been separated from the scraps. These beads had several different colored rods combined to create the mix you see here.

At this point, all beads go through the tumbling process to remove the scraps.

The remains of the scraps can be reused again and again, and fed back into the kiln to melt into new beads (above). The tumbler is shown below. Tumbling involved a mix of water and sand (or other grit) to break apart and separate the scraps, as well as smooth the rough edges from the beads.

At this point, the beads will be washed, sorted, dried, and packaged for distribution if the design is a pressed bead. If however the bead is meant to be faceted and firepolished, the beads are prepared for the next phase in the cutting and faceteing machines. To see how table cut beads are made, visit The Potomac Bead Company’s Table-Cut Bead Page.

The photo above shows a room full of cutting (faceting) machines. Each machine is manned by one worker, who loads a tray of round pressed beads (below)

The tray (above) is loaded from a trough of pressed round beads (below). Generally each worker is working with several faceted trays at a time.

As the worker is loading a new tray with beads, the faceting machine (below on the right) is cutting all of the beads down to the programed size using a series of spinning wheels with a rough finish (like sandpaper).

Water is also applied to the wheels, both to make them last longer and to cut down on the dust.

When the faceting phase is finished, the beads from the tray are dumped into this trough, and the empty tray is filled again with new round beads as the process repeats itself.

Once the beads are faceted, they washed, then hand strung onto small metal rods as seen above to dry and prepare for firepolishing. Prior to the firepolishing, the facets are very sharp and pronounced, however, the beads have a slightly matted look.

Now the trays of faceted beads are placed onto a conveyer belt, which will carry the trays through a large kiln (about 20 feet long). The beads take about 5 minutes to travel through the kiln, the temperature of which is about 1000 degrees farenheit.

Above, at the opposite end of the kiln, the a gloved worker removes the rods of beads from the trays, and places them in a bucket to cool.

Once cooled, the beads are removed from the rods, washed, and either packaged or hand-strung according to the customer’s instructions. The fire-polishing process has given the beads a bright, glossy, shiny finish that beaders love.

There are litterally thousands of color and finish options for any shape and style of Czech beads. In addition to the endless color options, most factories can produce hundreds of different shapes, from pressed, to fire-polished, to table-cut. Some favorites include rounds, faceted rounds, faceted ovals, pressed leaves, daggers, nuggets, faceted rondelles, flowers, cubes, discs, squares, diamonds, and more.

For more information on table cut beads, see the Czech Glass Table Cut Information Page

For more information on classic firepolishing techniques, see the Classic Czech Firepolishing Page