CNC Machining FTO Coated Glass: FTO Coated Glass (CTE substrate dependent, 80 – 82% visible @ 7 ohm/sq); CNC Machining to +/-0.01 mm positional. Single-piece prototypes to production volumes, quoted from your drawing.
Ask any process engineer what makes fto coated glass difficult and the answer is specific: the harder FTO film abrades diamond tooling faster and edges need post-cut inspection for film lift. Our cnc machining line is tooled around exactly that – 4-axis machining centers with diamond tooling and through-spindle coolant – holding +/-0.01 mm positional on parts from 0.5 – 50 mm thick.
Specification envelope
| Material | FTO Coated Glass (TEC-7, TEC-15 equivalents) |
|---|---|
| Thermal expansion (CTE) | substrate dependent |
| Service temperature | 600 C (coating stable) |
| Transmission range | 80 – 82% visible @ 7 ohm/sq |
| Density | 2.23 – 2.50 g/cm3 |
| Knoop hardness | harder film than ITO |
| Refractive index | ~2.0 (FTO film) |
| Stock thickness | 1.1 – 3.2 mm substrates |
| Maximum blank size | 360 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 |
Process window
CNC Machining earns its place through complex 3D geometry – pockets, steps, counterbores and compound edges in one setup. Its boundary condition – internal corners carry a minimum radius equal to the smallest practical tool, typically R0.5 mm – is the first thing our DFM review checks.
Beyond this page, FTO Coated Glass routinely runs through drilling, dicing, laser cutting, edge grinding in our shop – most real parts combine two or three of these steps.
DFM notes from the shop floor
The shop-floor rules that matter here:
- Material note: the harder FTO film abrades diamond tooling faster and edges need post-cut inspection for film lift.
- 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.
The full rules live in our tolerance design guide and holes and edges design guide.
Application context
Orders for cnc machining fto coated glass cluster in aerospace optics (sensor windows, star-tracker flats, radiation-tolerant ports); mems devices (cap wafers, TGV substrates, motion-sensor lids); scientific instruments (reference flats, cells, prism mounts, stage inserts). Background reading on the underlying material science: ScienceDirect: FTO glass.
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 CNC machining capability, custom FTO glass, JGS1 quartz glass.
Common 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 fto 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.