Technical Spoke: Dimensional Analysis
High-AccuracyDimensional Analysis& Metrology
Sub-micron dimensional validation combining tactile multi-axis Coordinate Measuring Machines (CMM) and high-resolution telecentric optical vision metrology. Ensuring rigorous CAD-to-part conformance, GD&T verification, and tight-tolerance repeatability down to ±0.005 mm.
CMM METROLOGY
OPTICAL VISION MEASURING
MICRON TOLERANCES (±0.005mm)
ASME Y14.5 GD&T
ISO 20457 / DIN 16742
The Metrology Imperative
Does every molded part faithfully match your engineering print?
In precision injection molding, raw polymers undergo intense thermal, shear, and volumetric transformations. Volumetric shrinkage, non-uniform cooling rates, gate freezing, and tool wear can introduce micro-deviations that compromise final assembly, interlock fits, and fluid containment.
Mascot Plastic Industries operates an in-house, climate-controlled metrology laboratory equipped with automated multi-axis CNC Coordinate Measuring Machines (CMM) and non-contact optical Vision Measuring Machines (VMM). From First Article Inspection (FAI) tooling signoffs to multi-cavity statistical process control (SPC), we provide verifiable dimensional certainty.
Metrology programs are executed under strictly stabilized conditions (20°C ± 1°C, 45-55% RH) following ISO 20457, DIN 16742 plastic molding tolerance guidelines, and ASME Y14.5 GD&T definitions.
Metrology Overview
High-Accuracy Dimensional Analysis
Metrology Suite
CNC Coordinate Measuring Machine (CMM) & Vision Measuring Machines (VMM)
Environment Control
Climate-Stabilized QA Lab (20°C ± 1°C, ISO Standards)
Measurement Resolution
Sub-micron probing (±0.005 mm / ±5 µm tolerance capability)
Governing Benchmarks
ISO 20457, DIN 16742, ASME Y14.5, ISO/IEC 17025
Metrology Protocol
How dimensional inspection is conducted
A repeatable, automated sequence ensuring unbiased measurement from CAD import to statistical capability delivery.
01
CAD & Drawing Import
Native 3D CAD models (STEP/IGES) and ballooned 2D prints are imported to program measurement paths for all CTQ features.
02
Thermal Soaking
Specimens are conditioned inside the metrology chamber for a minimum 24-hour stabilization to reach true thermal equilibrium.
03
Automated CNC Probing
Motorized touch probes and telecentric vision optics execute automated coordinate sweeps without manual operator variability.
04
GD&T Alignment
Measured surface points are mathematically aligned to primary, secondary, and tertiary datums for geometric position verification.
05
Inspection Certification
Generation of comprehensive First Article Inspection (FAI) reports, Cpk histograms, and deviation heatmaps.
Geometric & Dimensional Scope
Critical parameters measured
Our metrology infrastructure validates both micro-linear dimensions and complex geometric form relationships.
Micron Linear Tolerances
Direct measurement of inner/outer diameters, thread pitch, stepped bore depths, snap-fit cantilevers, and keyway widths down to ±0.005 mm.
Full GD&T Conformance
ASME Y14.5 verification of True Position, Concentricity, Flatness, Perpendicularity, Parallelism, and Total Runout relative to established datums.
Wall Thickness & Warpage
Multi-point ultrasonic and optical sectioning detecting differential shrinkage, core shift, sink mark depressions, and parting line mismatch.
Inspection Sequence
From mold trial to certified production run
Rigorous metrology checkpoints integrated across every manufacturing lifecycle stage.
01
FAI Qualification
100% full print measurement on T0/T1 trials
02
Cavity Balancing
Comparative multi-cavity variance audit
03
In-Process Audit
Hourly CTQ dimensional sampling
04
Tool Wear Tracking
Monitoring slide & insert wear drift
05
PPAP Level 3
Customer-ready documentation package
Key Applications
Industries requiring sub-micron dimensional accuracy
Our metrology validation guarantees flawless assembly and zero jams across automated downstream assembly lines.
Key Application
Automotive Under-Hood & Sensor Systems
Tight-tolerance sensor brackets, multi-pin electrical connectors, fluid control valves, and actuator housings requiring strict true-position pin locations.
Multi-pin automotive electrical connectors
ABS & engine sensor housings
Precision actuator gears & cams
Fluid manifold mounting clips
HVAC blend door linkages
Key Application
Pharmaceutical & Medical Devices
Micro-bore diagnostic cassettes, pipette tips, syringe plungers, inhaler mouthpieces, and labware requiring zero flash and sub-micron bore roundness.
Microfluidic diagnostic cassettes
Laboratory pipette tips & filters
Syringe barrels & plunger rods
Dialysis filter housings
Metered dose inhaler (MDI) actuators
Key Application
Caps, Closures & Dispensing Packaging
Continuous thread mating profiles, tamper-evident tear band bridges, valve orifices, and flip-top hinge fatigue geometry.
Multi-start threaded bottle caps
Tamper-evident bridge geometry
Dispensing pump internal pistons
Child-resistant push-and-turn ratchets
Dropper tip orifice diameters
Key Application
Electrical Engineering & Enclosures
Snap-fit industrial housings, interlocking PCB guide rails, terminal blocks, and DIN rail enclosures requiring zero warpage over extended lengths.
Modular DIN rail enclosures
PCB snap-fit chassis & brackets
Industrial switchgear terminal blocks
Relay covers & baseplates
Flame-retardant electrical junction boxes
Quality Assurance Suite
Explore sibling laboratory testing capabilities
Our integrated QA framework interconnects precision metrology, pressure resistance, and leak prevention.
Technical Spoke 01
Hydrostatic Bursting Strength Testing →
Controlled burst and internal hydrostatic pressure testing evaluating structural yield and pressure containment limits (ASTM D1599 / ISO 1167).
Technical Spoke 02
100% Seal Integrity Validation →
Pressure decay, vacuum leak testing, and torque mapping for zero-leak caps, closures, and fluid-bearing assemblies.
Engineering & Quality Assurance Value
How precision metrology drives manufacturing success
Metrology data bridges toolroom precision, process control, and enterprise customer satisfaction.
First Article Inspection (FAI) Confidence
Empirical full-dimension verification during mold tool development (T0 to T1), ensuring rapid steel adjustments before production release.
Multi-Cavity Balance Verification
Confirms that every individual cavity in a 16, 32, or 64-cavity mold produces parts with identical dimensional behavior and gate fill consistency.
Statistical Process Capability (Cpk ≥ 1.67)
Rigorous statistical validation demonstrating that process variability remains well within engineering tolerances over million-part runs.
Predictive Mold Maintenance
Detects micrometer-scale wear on slide actions, lifters, and core pins before flash or dimensional drift causes assembly downtime.
Metrology Documentation
Comprehensive Metrology Report
Every dimensional audit produces a traceable inspection report cross-referencing drawing balloon numbers with measured actuals, tolerances, and statistical indices.
✓
Ballooned drawing cross-reference
✓
Nominal CAD vs. measured actuals
✓
Upper & lower specification limits
✓
Deviation delta (± mm / µm)
✓
True Position & GD&T calculations
✓
Cavity-wise capability index (Cpk)
✓
Calibrated equipment traceability
✓
Metrology inspector certification
For Engineering & Sourcing Teams
Zero guesswork. Full engineering transparency.
Our metrology laboratory eliminates finger-pointing between toolmaker, molder, and assembly plant by providing empirical geometric proof.
✓
PPAP Level 3 documentation capability
✓
ISO 20457 / DIN 16742 plastic tolerances
✓
ISO/IEC 17025 accredited calibration protocols
✓
ISO 9001, 14001, 45001 & 13485 certified facility
✓
Full material test report (MTR) traceability
Technical Spoke Capability
Need high-accuracy dimensional inspection for your parts?
Submit your 2D drawings with critical tolerances and 3D CAD files. Our metrology engineering team will review your GD&T specifications and deliver a detailed inspection feasibility and tooling verification plan.
CMM Coordinate Inspection
Optical Vision Metrology
ASME Y14.5 GD&T
First Article Inspection (FAI)
PPAP Level 3
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