Precision Diameter Glass Discs – diameter +/-0.01 mm, roundness 5 um. No minimum order; DFM review included with every RFQ.
Drawings fail at the tolerance block more than anywhere else. For precision diameter glass discs the achievable envelope is diameter +/-0.01 mm, roundness 5 um – the method is centerless edge grinding.
The numbers
| Held tolerance | diameter +/-0.01 mm, roundness 5 um |
|---|---|
| Method | centerless edge grinding |
| Reference standard | to-drawing verification |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Specification advice
Before sending the RFQ, check these against your drawing:
- Cite to-drawing verification on the drawing so both sides measure the same way.
- 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.
Who orders this
precision diameter glass discs shows up across semiconductor equipment (view ports, wafer carriers, plasma rings, chamber windows); microfluidic devices (chips, manifolds, via plates, bonded stacks); laser systems (windows, beam splitters, debris shields).
Prefer to sketch it? Our custom glass machining 3D + 2D builder accepts your dimensions directly and routes them to engineering.
Engineers scoping this work usually also review surface quality guide, custom microfluidic chip, infrared windows.
Frequently asked questions
Do parts ship with inspection data?
Dimensional reports, surface certificates and material certs per melt are available; specify the level on the RFQ.
Which standard governs this?
to-drawing verification, verified by centerless edge grinding.
Is there a minimum order for precision diameter glass discs?
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.
Specifications on this page were last reviewed by our engineering team in September 2026.