How to Shape Glass with a Torch | Quick Demo

Описание: Experience the captivating world of torchworking (lampworking) as molten glass is shaped with precision, heat control, and advanced flame chemistry. This video highlights the full technical process behind modern glass manipulation using a surface-mix or premix torch, where oxygen and fuel gases create a precisely tuned flame for sculpting high-temperature glass materials.

Using temperatures ranging from 820°C to 1260°C for borosilicate glass, the artist softens glass rods and tubes to shape, twist, stretch, and encase them into intricate designs. The flame is carefully adjusted between oxidizing, neutral, and reducing settings to influence chemical reactions, color development, and surface finish—especially important for silver-based and copper-based color families.

The shaping process includes:

Pulling & Stretching: Using gravity and controlled heat to elongate molten glass.

Marvering: Refining form on graphite or stainless surfaces.

Twisting: Creating spirals and patterned color layers.

Encasement: Sealing color within crystal-clear borosilicate.

Localized Heating: Bending, bulging, and shaping with pinpoint accuracy.

Hot Connections: Using punties and rods to maneuver complex forms.

After shaping, the piece must undergo kiln annealing at controlled temperatures (~565°C for boro) to release internal stress caused by thermal expansion and prevent cracking. This annealing process passes the glass through the strain point to ensure long-term structural stability.

The torch setup typically uses propane, natural gas, or hydrogen, providing clean, high-temperature flames suitable for scientific glasswork and artistic sculpture. Safety equipment—including didymium safety lenses, proper ventilation, fire-resistant work surfaces, and specialized tools—ensures a secure working environment for handling molten material.

This short offers an up-close look into the craftsmanship, material science, and technical expertise required in high-temperature glassworking. Perfect for viewers fascinated by handmade art, fine craftsmanship, flame chemistry, and molten material behavior.

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