Observed arrival · 2026-09-09
Prudape: a field guide to hot glass
A Spanish-language guide to glassblowing, covering the workshop’s furnaces, tools, forming methods, color, annealing, cold work, and safety.
Field notes
The guide maps a glass object through three distinct thermal stages: a furnace keeps the material molten, a reheating chamber restores plasticity during shaping, and an annealing kiln cools the finished piece over hours. It gives working ranges of roughly 1,080–1,200 °C for the melting furnace and 430–550 °C for annealing, while also describing a 120–160-centimetre steel blowpipe. The page covers both free and mold blowing, metallic-oxide colorants, cold finishing, and safety.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue