TOLERANCES & QUALITY STANDARD
Controlled variation. Predictable assembly. Platform-level repeatability.
Infinity Skies products are designed, manufactured, inspected, and released under a strict tolerances and quality framework intended to ensure interchangeability, modular compatibility, and long-term system stability across all products and suppliers.
If a component fits the platform once, it must fit it forever.
1. Scope & Applicability
Document Reference: IS-TQS-001
Applies To:
- All Infinity Skies modular components
- All interface plates, blocks, fixtures, and systems
- Prototype, production, and program hardware
- All internal and partner manufacturing
Does Not Apply To:
- Commodity purchased hardware
- Customer-supplied parts (unless certified)
- Purely cosmetic, non-interface components
This standard applies regardless of production volume, manufacturing method, or supplier location.
2. Quality Philosophy
Infinity Skies quality is not based on post-process inspection. It is enforced at the design, interface, and system architecture level.
- Tolerances are deliberate, not optimistic
- Interfaces are controlled more tightly than non-critical features
- Interchangeability is mandatory
We do not design parts. We design systems that tolerate reality.
3. Tolerance Classification System
All Infinity Skies dimensions fall into one of four tolerance classes.
| Class | Description | Typical Use | Default Range |
|---|---|---|---|
| Class A | Interface Critical | Datums, grids, mating faces | ±0.001″ |
| Class B | Alignment Critical | Motion, rails, precision blocks | ±0.002″ |
| Class C | Structural | Frames, plates, supports | ±0.005″ |
| Class D | Non-Critical | Covers, guards, cosmetic | ±0.010″ |
4. Default Dimensional Tolerances
| Feature Type | Default Tolerance |
|---|---|
| Linear dimensions | ±0.005″ |
| Hole diameter | +0.002″ / −0.000″ |
| Hole position (non-datum) | ±0.005″ |
| Flatness (non-interface) | 0.010″ |
| Angular | ±0.5° |
If tighter tolerances are required, they must be explicitly called out on the drawing.
5. Datum & Interface Control
All modular compatibility depends on disciplined datum control.
- Primary interfaces define Datum A
- Orthogonal reference faces define Datum B and C
- Hole grids are always positionally controlled to datum structure
No tolerance stack-ups are permitted across modular interfaces.
6. Geometric Control
| Feature | Standard Requirement |
|---|---|
| Interface plate flatness | ≤ 0.001″/12″ |
| Parallel faces | ≤ 0.001″ |
| Perpendicularity | ≤ 0.001″/inch |
| Hole perpendicularity | ≤ 0.002″/inch |
Relationship to Other Standards
- Unified Modular Standard
- Mechanical Interface Specification (IS-AMS-001)
- Materials & Finishes Standard
- Master Modular Product List (MMPLS-001)
Engineering Access
Infinity Skies standards are living documents. Engineering inquiries only.