Quick answer: Borofloat 33 With Beveled Edges covers Borofloat 33 (CTE 3.25 x 10^-6 /K, 350 nm – 2.0 um); bevel angle 30 – 60 degrees, face width to 5 mm. Prototypes ship in 5-10 working days.
Our borofloat 33 with beveled edges cover the full route from blank to inspected part: sawing, CNC profiling, drilling, grinding, polishing and edge finishing under one roof. Borofloat 33 stands out for float-glass flatness off the line and anodic bonding to silicon, and both properties survive our processing because every step is tuned to the material.
The numbers
| Material | Borofloat 33 (SCHOTT float production, wafer grade) |
|---|---|
| Thermal expansion (CTE) | 3.25 x 10^-6 /K |
| Service temperature | 450 C continuous |
| Transmission range | 350 nm – 2.0 um |
| Density | 2.23 g/cm3 |
| Knoop hardness | 480 kg/mm2 |
| Refractive index | 1.471 @ 587 nm |
| Stock thickness | 0.70 – 25.4 mm |
| Maximum blank size | 500 x 500 mm |
| Feature | Beveled Edges |
| Capability | bevel angle 30 – 60 degrees, face width to 5 mm |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Getting the drawing right
Three items decide most of the cost and lead time on this work:
- Material note: float tin side must be tracked when parts see coating or bonding steps.
- Feature rule: polished bevels double as light-guide entry faces.
- Over-specification is the quiet budget killer: a 20/10 scratch-dig face costs roughly three times an 80/50 face, so grade each surface individually.
For the complete framework, see the tolerance design guide and the holes and edges design guide.
Manufacturing capability
One material, many routes: on Borofloat 33 we also quote laser cutting, dicing, drilling, grinding, and multi-step drawings are the norm rather than the exception.
These features are produced by edge grinding or polishing. Capability: bevel angle 30 – 60 degrees, face width to 5 mm. Design rule worth copying onto the drawing: polished bevels double as light-guide entry faces.
Typical applications
Orders for borofloat 33 with beveled edges cluster in machine vision (camera windows, ring-light diffusers, calibration plates); microfluidic devices (chips, manifolds, via plates, bonded stacks); led packaging (groove covers, phosphor carriers, package windows). Background reading on the underlying material science: SCHOTT BOROFLOAT product page.
The fastest route to a quote is geometry: use the 3D builder below, draw a dimensioned 2D drawing from it, or open the site-wide custom glass machining 3D + 2D builder for fully custom parts.
Engineers scoping this work usually also review wafer dicing process, Borofloat 33 selection guide, JGS1 quartz glass.
Common questions
Is there a minimum order for borofloat 33 with beveled edges?
No. Single prototypes are accepted, and pricing steps down at 10, 100 and 1,000 pieces.
How fast can prototypes ship?
Machined prototypes ship in 5 – 10 working days. Coated or bonded parts add 1 – 2 weeks depending on queue slots.
What files do you need for a quote?
A dimensioned PDF plus DXF or STEP geometry. If only a sketch exists, our drawing review service formalizes it before quoting.
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
What tolerances are achievable on Borofloat 33 parts?
Ground features hold +/-0.01 mm and lapped thickness reaches +/-0.003 mm. Float tin side must be tracked when parts see coating or bonding steps.
Specifications on this page were last reviewed by our engineering team in September 2026.