Glass Cutout Machining can be reviewed for Borofloat Glass, but the accepted route depends on the exact grade or functional material definition, supplied form, thickness, feature geometry, edge condition, surface requirement and inspection method. The assigned process record notes: Cutout / Window Machining: source-backed external reference facts retained from V3.2.1; only numeric facts are counted as numeric capability data. The assigned material or application record adds: Material- and grade-dependent; qualify cutting, grinding, drilling, lapping and polishing against fracture and surface requirements.
Glass Cutout Machining for Borofloat Glass
Glass Cutout Machining can be reviewed for Borofloat Glass, but the accepted route depends on the exact grade or functional material definition, supplied form, thickness, feature geometry, edge condition, surface requirement and inspection method. The assigned process record notes: Cutout / Window Machining: source-backed external reference facts retained from V3.2.1; only numeric facts are counted as numeric capability data. The assigned material or application record adds: Material- and grade-dependent; qualify cutting, grinding, drilling, lapping and polishing against fracture and surface requirements.
Borofloat Glass
Material- and grade-dependent; qualify cutting, grinding, drilling, lapping and polishing against fracture and surface requirements
Glass Cutout Machining
Cutout / Window Machining: source-backed external reference facts retained from V3.2.1; only numeric facts are counted as numeric capability data.
Drawing-defined feasibility
Final capability is reviewed against grade, supplied form, thickness, geometry, edge distance, finish, tolerance, quantity and inspection method.
How the Process and Glass Type Interact
The table separates verified process or material records from project-specific items that still require drawing review.
| Review area | Assigned technical basis |
|---|---|
| Process purpose | Cutout / Window Machining: source-backed external reference facts retained from V3.2.1; only numeric facts are counted as numeric capability data. |
| Material or functional basis | Material- and grade-dependent; qualify cutting, grinding, drilling, lapping and polishing against fracture and surface requirements |
| Input form | Flat sheet, blank, tube, rod or preform as applicable to the named process |
| High-risk condition | Thin, brittle, strengthened, crystalline or coated parts require grade- and geometry-specific qualification |
| Inspection basis | Dimensional and visual inspection; add microscopy, profilometry or interferometry when the drawing requires it |
BOROFLOAT 33 Properties Relevant to Glass Cutout Machining
Published values retain their grade and source conditions. They are not automatic finished-part guarantees.
| Material property | Published reference |
|---|---|
| Material category | Borosilicate 3.3 |
| Thermal expansion | 3.25e-6 1/K (20 to 300 deg C; ISO 7991 reference value) |
| Service temperature | 500 deg C (Short-term use below 10 h; reference value); 450 deg C (Long-term use at or above 10 h; reference value) |
| Refractive index | 1.47140 index (587.6 nm) |
| Available forms | Sheet, plate, disc, window, tube, rod or blank where the named grade is supplied in that form |
Cutout Machining References and Design Limits
Numeric values are displayed only when an exact or accepted process-family record has verified public evidence. Proxy-family pages suppress numeric ranges and remain drawing-review pages.
| Process parameter | Reference value | Applicable condition |
|---|---|---|
| Minimum Thickness | 0.76 mm | JNS/Abrisa CNC fabrication program |
| Maximum Thickness | >25.4 mm | JNS/Abrisa CNC fabrication program; upper limit stated as greater than 25.4 mm |
| Minimum Part Size | 50.8 x 50.8 mm | CNC program; workholding may require larger size for individual features |
| Maximum Part Size | 2286 x 1524 mm | CNC program envelope |
| Dimensional Tolerance | ±0.508 mm general; up to ±0.127 mm | Provider CNC program; feature, material and size dependent |
| Design item | What must be reviewed |
|---|---|
| Thickness and part envelope | 0.76 mm >25.4 mm 50.8 x 50.8 mm 2286 x 1524 mm |
| Tooling and process condition | Valley uses 4- and 5-axis CNC machining for complex precision components. |
| Tolerance and finish | ±0.508 mm general; up to ±0.127 mm Abrisa states that custom CNC glass shapes can receive ground or polished edging. |
| Drawing review | For Glass Cutout Machining on Borofloat Glass, identify datums, critical features, edge and surface zones, coating sides, inspection method and quantity. |
Inspection Focus for Borofloat Glass Glass Cutout Machining Feasibility Review
Acceptance should connect the drawing characteristic to a measurement method, fixture condition and stated limit.
| Review item | Project-specific focus |
|---|---|
| Process defects | Chipping, cracking, subsurface damage, dimensional error, contamination or surface defects as applicable |
| Process limitation | Public supplier values are not universal; blank numeric fields indicate that no transferable public value was verified |
| Design condition | Define material grade, thickness, geometry, edge distances, datum scheme, surface/edge acceptance and inspection method |
| Acceptance method | Microscopic Edge Inspection: Compare calibrated result with the drawing, purchase order or approved test specification |
Information Needed Before Quotation
Use the drawing to define the exact material, process feature, tolerance, edge and surface acceptance criteria.
RFQ inputs
- Define material grade, thickness, geometry, edge distances, datum scheme, surface/edge acceptance and inspection method
- Provide a drawing revision, material or grade, quantity, dimensions, tolerances, critical surfaces and the required inspection record.
Selected Material and Process References
References support the assigned records but do not replace an approved part drawing, first-article result or production specification.
- SCHOTT BOROFLOAT 33 Technical Data schott.com
- Valley Design CNC Glass Machining Services Valley Design
- Abrisa Glass Machining Capabilities Abrisa Technologies
- Sydor CNC Glass Machining Sydor Optics
- Precision Drilling and Milling Vitrum Glass Group
Request a Project-Specific Glass Review
Send the drawing, material, dimensions, quantity, tolerances, surfaces and inspection requirements for feasibility review.
- Process: Glass Cutout Machining
- Material: Borofloat Glass
- Drawing or part sketch
- glass type/grade
- Thickness / part size
- Quantity
STEP/STP, DXF, DWG, PDF, IGS/IGES or ZIP.
Confidential drawing review. NDA support available on request.
Frequently Asked Questions
These answers use the material, process, product and application data assigned to this page.
Is Glass Cutout Machining suitable for Borofloat Glass on Borofloat Glass Glass Cutout Machining Feasibility Review?
Glass Cutout Machining can be reviewed for Borofloat Glass, but the accepted route depends on the exact grade or functional material definition, supplied form, thickness, feature geometry, edge condition, surface requirement and inspection method. The assigned process record notes: Cutout / Window Machining: source-backed external reference facts retained from V3.2.1; only numeric facts are counted as numeric capability data. The assigned material or application record adds: Material- and grade-dependent; qualify cutting, grinding, drilling, lapping and polishing against fracture and surface requirements.
Which material details must be confirmed before Glass Cutout Machining for Borofloat Glass?
For Borofloat Glass Glass Cutout Machining Feasibility Review, material- and grade-dependent; qualify cutting, grinding, drilling, lapping and polishing against fracture and surface requirements.
Which geometry details control Glass Cutout Machining for Borofloat Glass?
For Borofloat Glass Glass Cutout Machining Feasibility Review, define material grade, thickness, geometry, edge distances, datum scheme, surface/edge acceptance and inspection method.
Can published process values be used as guaranteed tolerances for Borofloat Glass Glass Cutout Machining Feasibility Review?
For Borofloat Glass Glass Cutout Machining Feasibility Review, no. Published values remain reference conditions. The accepted tolerance depends on the exact material grade, thickness, geometry, datum scheme, edge and surface requirement, quantity and inspection method.
Which defects and inspection checks matter after Glass Cutout Machining on Borofloat Glass?
For Borofloat Glass Glass Cutout Machining Feasibility Review, chipping, cracking, subsurface damage, dimensional error, contamination or surface defects as applicable.
What should an RFQ include for Borofloat Glass Glass Cutout Machining Feasibility Review?
For Borofloat Glass Glass Cutout Machining Feasibility Review, provide the material or grade, drawing revision, dimensions, quantity, tolerances, critical surfaces, service conditions and required inspection record.