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Corrections, questions and suggestions. There is no newsletter list and no CRM — a person reads these.

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Most questions are already answered somewhere on the site, and the answers are faster to read than to wait for.

Getting started — what to buy and what to leave alone
Annealing — why a piece that looked fine cracked a week later
COE calculator — whether two glasses can be worked together
Glass database — expansion and annealing figures for twenty-four glasses

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A correction that comes with a source — a data sheet, a published schedule, a standard — is applied and credited. One that comes with an opinion gets read and thought about.

What we cannot help with

Diagnosing your specific kiln, furnace or injury. For the first two, the manufacturer is the right route; for the third, a medical professional is.

Molten & Form

An independent, educational reference for glassblowers. We do not sell tools, we do not endorse brands, and nothing here guarantees a result.

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Glassblowing safety

Hot glass and every tool it has touched will burn you, and hot metal looks exactly like cold metal. Wear eye protection with side shields and natural-fibre clothing, ventilate for combustion gases and metal fume, work wet or extract dust when coldworking because silica exposure is cumulative, keep water away from the melt, and know where the shut-offs and the fire equipment are. Check the regulations that apply where you are — they may be stricter than the general practice described here.

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