Quick answer: Parallelism Tolerance for Glass Plates covers parallelism to 2 um / TTV < 3 um. Prototypes ship in 5-10 working days.
parallelism tolerance for glass plates is a measurable claim, so here is the number: parallelism to 2 um / TTV < 3 um, achieved with planetary dsp with carrier control and reported against SEMI TTV definitions.
Specification envelope
| Held tolerance | parallelism to 2 um / TTV < 3 um |
|---|---|
| Method | planetary DSP with carrier control |
| Reference standard | SEMI TTV definitions |
| RFQ inputs | PDF/DXF/STEP drawing, quantity brackets, surface and edge spec |
Design guidance
Before sending the RFQ, check these against your drawing:
- Cite SEMI TTV definitions 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.
The full rules live in our tolerance design guide and holes and edges design guide.
Application context
The recurring buyers of parallelism tolerance for glass plates: oled packaging (cover lids, frit-seal frames, fill-port plates); laboratory instruments (cuvettes, sight glasses, stir-cell windows); 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.
Related reading on this site: custom ITO glass, AR coating process, high-purity quartz guide.
Common 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?
SEMI TTV definitions, verified by planetary dsp with carrier control.
Is there a minimum order for parallelism tolerance for glass plates?
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.
Specifications on this page were last reviewed by our engineering team in September 2026.