A proposed GlassRenu term for a pronounced scratch requiring substantial controlled material removal relative to the approved restoration process.
GlassRenu media library · Image source · Image source
Meaning and boundaries
Heavy cannot be determined reliably from visibility or a fingernail test alone and does not prove repairability or structural acceptability.
Why it matters in glass restoration
A defined threshold is needed because removal depth, work-area size, heat, distortion, remaining thickness, and subsurface cracking all increase risk.
Related terms
References
- GlassRenu — Heavy Scratching
Publisher’s original source - National Institute of Standards and Technology — Fractography of Ceramics and Glasses, 3rd edition
Publisher’s original source - National Bureau of Standards / NIST — The Science of Ceramic Machining and Surface Finishing II
Publisher’s original source