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Know-how

The hot workshop

At Saint-Louis, the hot workshop - when and whereby crystal glass is produced under high temperature - is the essence of the central hall, the beating heart of the workshop.

Fuse
Step 01

Fuse

It is in the heart of the continuous casting furnace that the melting of the crystal takes place at 1450 ° C in the form of a malleable incandescent lava free of all its impurities before being deposited in the sampling zones.

Collect
Step 02

Collect

It is in these “collecting bays”, maintained at a constant temperature of 1200 ° C, that the glassmakers “pick up” at the end of their cane the crystal quantity necessary for the production of a unique piece, from the glass to the chandelier branch

Shape
Step 03

Shape

The glassblowers are like ogres with the finesse of embroiderers. They are men with lung power, whose breath kisses and kindles the orange mass at the end of the blowpipe; then they place the molten glass in a mould of beech wood or steel, where, in a fury of flames and steam at 900°C, the initial form of the object, the parison, is pressed.

Create
Step 04

Create

In a matter of seconds or minutes, working in small groups, the glassworkers perform a series of rapid sequences in which the eye, the hand and the mouth are the tools of the trade. There are also shears that cut, trim and open; wooden pallets that fashion and straighten; pincers that hold, stretch and twist; but the glassblower’s skill lies in his ability to blow and turn the rod at the same time while measuring the effects on the crystal, now at 600°C.

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