Glass Cutting, Edging & Fabrication
Glass cutting techniques, tools, edge types - seamed, flat polished, beveled - and glass edging processes.
- Describe the glass scoring and breaking process
- Identify the types of glass that can and cannot be cut
- Explain edge finishing types and their applications
- Describe the fabrication process for tempered and laminated glass
- State quality requirements for cut glass edges
Lección 1
Glass Cutting Techniques & Tools
The Scoring Process
Glass cutting is actually glass scoring and breaking. A carbide or diamond wheel scribes a shallow scratch (score) on the glass surface, creating a stress concentration. Controlled pressure then propagates a crack along the score line, separating the glass.
Cutting Tools
- Glass cutter - handheld tool with carbide or diamond wheel
- Running pliers - squeeze to propagate the score
- Straight edge - guide for straight cuts
- CNC cutting table - computer-controlled for production cutting
- Cutting oil - lubricates the wheel for cleaner scores
Never Re-Score a Line
Scoring over the same line twice creates multiple fracture paths, resulting in a rough, uncontrolled break. Always score in a single continuous pass with consistent pressure.
Glass That Cannot Be Cut
The following glass types cannot be cut after manufacturing:
- Tempered glass - shatters into small fragments if cut
- Heat-strengthened glass - breaks unpredictably if cut
- Laminated glass - requires specialized cutting of each layer
Only annealed glass can be reliably scored and broken in the field.
Glass cutting is scoring and breaking in a single pass - never re-score. Only annealed glass can be cut in the field. Tempered and heat-strengthened glass cannot be cut after manufacturing and must be ordered to size.