On method.

Two processes recur across the collection. Each is the shortest route between a working bar's demands and the object in the hand.

§ 01

Hand-blown crystal.

A rim of 0.9 mm cannot be pressed, cannot be machine-blown. Past a certain thinness, only a human lung and a steady hand will produce the geometry without fracturing it in the mold.

A gather of molten crystal is taken from the furnace at roughly 1150 °C. The gaffer shapes the parison by breath alone, rotating the pipe to hold the wall concentric under gravity. The stem is pulled from a second gather, not fused. Annealing begins near 540 °C and drops over four hours.

Furnace1150 ± 20 °C

Rim0.9 mm, cold-cut

Anneal540 → 80 °C / 4 h

Applied toAR-11, EL-05

§ 02

Ion Strong® soda-lime.

Service glass takes impact at the rim, the base, and the rack. Toyo-Sasaki's Ion Strong® process treats the whole vessel, not only the rim — so failure modes stay predictable.

Annealed soda-lime is submerged in a bath of molten potassium nitrate at roughly 450 °C. Potassium ions displace sodium ions at the surface; the larger potassium ions crowd the lattice and hold it in compression. Rated 1.5× the strength of conventionally hardened glass; 4,500 commercial dishwasher cycles without alkaline whitening.

BathKNO₃ · 450 °C

Strength1.5× hardened glass

Dishwasher4,500 cycles, no clouding

Wall1.1 mm · 33% lighter

Breakage−40% (12-mo field test)

Applied toGL-09

On method.

Hand-blown crystal.

Ion Strong® soda-lime.

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