CNC Machining ITO Coated Glass – ITO Coated Glass (CTE substrate dependent, >85% visible @ 100 ohm/sq); CNC Machining to +/-0.01 mm positional. No minimum order; DFM review included with every RFQ.
cnc machining ito coated glass is a materials problem before it is a machining problem. ITO Coated Glass has transparent conductivity and a Knoop hardness of substrate value, so the cnc machining recipe – feeds, coolant, tooling – differs from what works on ordinary float glass. The line runs 4-axis machining centers with diamond tooling and through-spindle coolant and holds +/-0.01 mm positional.
Key parameters
| Material | ITO Coated Glass (ITO on soda-lime, borosilicate or alkali-free) |
|---|---|
| Thermal expansion (CTE) | substrate dependent |
| Service temperature | 350 C (coating stable) |
| Transmission range | >85% visible @ 100 ohm/sq |
| Density | 2.23 – 2.51 g/cm3 |
| Knoop hardness | substrate value |
| Refractive index | 1.9 – 2.1 (ITO film) |
| Stock thickness | 0.30 – 3.0 mm substrates |
| Maximum blank size | 400 x 300 mm |
| Process | CNC Machining |
| Working tolerance | +/-0.01 mm positional |
| Minimum feature | 0.4 mm slot width |
| Surface finish | Ra 0.4 um ground, optional polish |
| Thickness window | 0.5 – 50 mm |
| Edge condition | chamfered 0.1 – 0.5 mm as standard |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Getting the drawing right
The shop-floor rules that matter here:
- Material note: machining happens film-side-aware: scribing, edge deletion and contact zones are defined before cutting.
- Process boundary: internal corners carry a minimum radius equal to the smallest practical tool, typically R0.5 mm.
- 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.
Capabilities and limits
The core strength of CNC Machining is complex 3D geometry – pockets, steps, counterbores and compound edges in one setup. The honest limit: internal corners carry a minimum radius equal to the smallest practical tool, typically R0.5 mm. Both belong on the drawing before quoting, not after.
One material, many routes: on ITO Coated Glass we also quote dicing, drilling, coring, edge grinding, and multi-step drawings are the norm rather than the exception.
Application context
The recurring buyers of cnc machining ito coated glass: industrial displays (touch covers, gauge windows, printed bezels); aerospace optics (sensor windows, star-tracker flats, radiation-tolerant ports); ccd inspection equipment (CCD cover plates, reference grids, stage glass). Background reading on the underlying material science: ScienceDirect: indium tin oxide.
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.
Related reading on this site: ITO coated glass, ITO coating process, CCD screening plates.
Frequently asked questions
What equipment runs the cnc machining work?
4-axis machining centers with diamond tooling and through-spindle coolant.
Is there a minimum order for cnc machining ito coated glass?
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.
Specifications on this page were last reviewed by our engineering team in August 2026.