The Glassblower Working Twelve-Hour Days for a Single Decanter
At the Moser glassworks in Karlovy Vary, Czech Republic, a master glassblower begins his shift at five in the morning when the furnace has reached twelve hundred degrees Celsius. By the time he sets down his blowpipe at day's end, he will have completed one decanter, a single object representing twelve hours of continuous, physically demanding artistry.
Glassblowing at this level begins with gathering molten glass on the end of a hollow steel pipe. The gather must be rotated constantly to prevent gravity from distorting its shape. The blower rolls, blows, and shapes using jacks to narrow the neck, blocks to round the body, and tweezers to pull decorative details from the molten surface.
The Moser factory, founded in 1857 by Ludwig Moser, is distinguished by its refusal to use lead oxide in its crystal. Their proprietary formula achieves comparable brilliance and weight through a potassium-rich composition that is both more environmentally responsible and more challenging to work at higher temperatures.
Colour in art glass is achieved through metallic oxides dissolved in the melt. Cobalt produces deep blue, selenium yields red, and iron creates green. Moser is renowned for its alexandrite glass, which shifts between blue and purple depending on the light source, an optical phenomenon requiring extremely precise oxide ratios.
After blowing, the decanter enters an annealing oven where it cools gradually over twenty-four hours. Rapid cooling would introduce internal stresses making the glass brittle. The annealing process relaxes the molecular structure, producing a finished piece that will withstand decades of daily use without failure.
When selecting a hand-blown decanter, hold it to the light and look for the subtle irregularities that distinguish handwork from machine production: slight variations in wall thickness, a pontil mark on the base, and the organic fluidity of a form shaped by breath and gravity rather than a mould. Explore at https://www.moser-glass.com
