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The Glass BenchNumbered sheets on glass pipes, from the torch bench to the wholesale crate

ProtocolSheets 10Logged 06/10/2026

Station
BN
Sheets
3
Last logged

The Bench

Borosilicate, the torch, kilns and annealing, wall thickness and joints, the bench where a pipe is made and inspected, sheet by sheet.

§ 1 Sheets of this station

Sheets 3

A glass shop kiln controller at night, its digital display reading 370 C, a handwritten kiln log open on the bench beside it with a pen resting in the gutter, a single borosilicate spoon pipe cooling on a firebrick in the foreground, warm amber light from the kiln door.
View BN-003
Sheet
BN-003
Logged

Seeds, Cold Shuts and Devitrification at the Bench

Three defects a bench should catch before packing a case: the trapped bubble of a seed, the unfused fold of a cold shut, and the cloudy surface of devitrification.

1,089 words · 5 min

A glass shop kiln controller at night, its digital display reading 370 C, a handwritten kiln log open on the bench beside it with a pen resting in the gutter, a single borosilicate spoon pipe cooling on a firebrick in the foreground, warm amber light from the kiln door.
View BN-002
Sheet
BN-002
Logged

Why a Glass Pipe Cracks Hours After Cooling

A piece that cracks hours after cooling was not annealed through the strain point. The kiln schedule, the bench log, and how to read a result before changing a

1,338 words · 6 min

§ 2 Station log

Station log, newest first
SheetLoggedLength
BN-0031,089 words
BN-0021,338 words
BN-0011,223 words