Observed arrival · 2026-10-21
Feborak’s Optical Glass Annealing Field Guide
Credibility concern recorded. The source reference remains available for verification and correction.
An editorial-style site about borosilicate annealing, optical glass chemistry, stress analysis, and striae elimination.
- For
- Readers of optical glassworking and annealing
- Worth noticing
- The homepage calls its methods “laboratory-verified” but names no author, lab, or citations in the extracted material.
Field notes
The index groups the material into timed dispatches, with visible entries on glass-transition stress relief, borosilicate chemistry, photoelastic analysis, and striae elimination. One teaser specifies boron trioxide (B2O3) and a stated expansion coefficient of 3.25 × 10⁻⁶/°C; another describes platinum stirring at 1550°C. The homepage asserts laboratory verification, but the extracted page names no author, laboratory, or supporting references.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue