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Model Makers, Metal and Plastic

SOC 51-4061.00Job Zone 3 · Medium Preparationv.26.05

Context coveredThis framework covers metal and plastic model-making competencies practiced in production machine shops and prototype fabrication environments, spanning manual and CNC machining, precision inspection, and engineering drawing interpretation calibrated to Job Zone 3 preparation.

Sources:O*NET v30.2O*NET Resource Center — Occupational Information Network, v30.2 (Sept 2025). Opens in new tab.SkillsCrosswalkSkillsCrosswalk — O*NET enrichment + adjacency index. Opens in new tab.
Emerging
Entry / Apprentice
  1. Blueprints and technical sketches — read and interpret under direct supervision to identify basic material dimensions and part geometry in a model-making shop.
  2. Hand tools such as files, mallets, and snips — select and use following step-by-step instruction to cut and shape metal or plastic stock on a supervised production floor.
  3. Lathes and drill presses — operate under close guidance to perform single-step machining tasks on prototype blanks in a vocational or entry-level shop setting.
  4. Precision measuring instruments such as calipers and micrometers — apply under supervision to verify basic dimensional tolerances on finished model parts.
  5. Holes for fasteners — drill and countersink in pre-marked assemblies using power tools under direct technician oversight in a fabrication environment.
  6. Material dimensions and operation sequences — identify from drawings with guidance to prepare work orders before beginning a model fabrication task.
  7. CNC machine interfaces — navigate and load pre-written programs under trainer direction to produce simple model components on a shop floor.
  8. Grinding and sanding procedures — follow prescribed steps to bring metal or plastic parts to specified surface finish under supervision in a finishing area.
  9. Safety protocols and personal protective equipment — apply consistently while operating machinery in compliance with shop safety standards.
  10. Quality defects and dimensional nonconformances — recognize and report to a senior model maker during routine inspection of fabricated prototype parts.
Developing
Mid-level / Established
  1. Blueprints, sketches, and 3-D drawings — analyze independently to determine material stock sizes, tooling requirements, and machining sequences for multi-step prototype jobs.
  2. Lathes, bandsaws, and punch presses — set up and operate with reduced oversight to fabricate metal and plastic model components to drawing specifications in a production shop.
  3. CNC programs for standard part geometries — write and edit using CAM software to machine model parts efficiently on a shop CNC mill or lathe.
  4. Precision measuring instruments and circuit testers — apply routinely to inspect finished model parts and assemblies against dimensional and functional specifications.
  5. Metal stock — cut, shape, and form using power saws, power brakes, and shears to produce prototype components within specified tolerances on a production floor.
  6. Rework operations on out-of-tolerance components — perform using files, grinders, and hand tools to bring model parts into conformance with engineering requirements.
  7. Hole patterns and reamed bores — produce in multi-part assemblies using layout tools and power drilling equipment to achieve correct fit for fasteners and pins.
  8. Equipment selection decisions — make independently by matching cutting tool type and machine capability to material properties and part complexity for routine prototype tasks.
  9. Spreadsheet and office suite software — use to document material usage, machining parameters, and inspection results for ongoing prototype projects.
  10. Machining anomalies and tool wear — monitor during production runs and make corrective adjustments to feeds, speeds, or tooling to maintain part quality.
Proficient
Senior / Expert IC
  1. Complex blueprints and engineering drawings — interpret autonomously across full project scope to plan complete fabrication sequences for multi-component metal and plastic models.
  2. Full machine shop equipment including lathes, milling machines, and bandsaws — set up, operate, and troubleshoot across diverse prototype projects without supervisory oversight.
  3. CNC toolpaths and machining strategies — develop using advanced CAM software features to optimize cycle time and surface quality for intricate prototype model parts.
  4. Comprehensive dimensional and functional inspection — conduct using precision instruments, gauges, and circuit testers to validate prototype assemblies against engineering specifications.
  5. Non-routine fabrication challenges such as exotic alloys or complex geometries — resolve by applying mechanical knowledge, deductive reasoning, and creative tool selection in a model-making environment.
  6. Rework and design-deviation analysis — lead for failed or nonconforming model parts, determining root cause and implementing corrective machining strategies to restore conformance.
  7. CAD software models and engineering datasets — reference and cross-check against physical prototypes to ensure dimensional fidelity throughout the fabrication and finishing process.
  8. Time management across concurrent prototype jobs — apply to schedule machining operations, material procurement, and inspection milestones to meet engineering program deadlines.
  9. Finishing operations including precision grinding, filing, and surface treatment — execute to exacting tolerances on final prototype assemblies delivered to engineering review teams.
  10. Judgment on material substitutions and process deviations — exercise independently when specified stock or tooling is unavailable, documenting decisions in accordance with quality standards.
Advanced
Lead / Principal / Executive
  1. Shop-wide fabrication standards and best practices — establish and document to guide model-making operations and ensure consistent prototype quality across all projects and personnel.
  2. Junior and mid-level model makers — mentor and coach in blueprint interpretation, machine setup, and precision measurement within a structured apprenticeship or on-the-job training program.
  3. CNC programming workflows and CAM technology adoption — lead by evaluating new software tools and integrating them into shop operations to advance throughput and part complexity capability.
  4. Quality control systems for prototype model fabrication — design and implement, defining inspection criteria, measurement plans, and nonconformance disposition processes at an organizational level.
  5. Cross-functional collaboration with design engineers and product teams — facilitate by translating complex engineering requirements into actionable fabrication plans for high-stakes prototype programs.
  6. Capital equipment selection and machine procurement decisions — drive by assessing production needs, evaluating vendor capabilities, and specifying machine requirements for model-making operations.
  7. Continuous improvement initiatives targeting scrap reduction and cycle time — lead using data from machining logs and inspection records to optimize processes across the model shop.
  8. Safety culture and compliance programs — champion by developing procedures, conducting audits, and ensuring all shop personnel adhere to OSHA and facility safety requirements.
  9. Strategic workload planning and resource allocation — direct across multiple concurrent prototype programs, balancing personnel skills, machine capacity, and customer delivery commitments.
  10. Organizational knowledge transfer and technical documentation — oversee by ensuring that machining parameters, tooling libraries, and process recipes are systematically captured for institutional continuity.

AI-at-Work Competency Framework

Sources:Anthropic Economic IndexAnthropic Economic Index — release_2026_03_24. Opens in new tab.Jadhav & Danve, 2026Skill Automation Feasibility Index — Jadhav & Danve, 2026 (arXiv:2604.06906). Opens in new tab.WEF Skills TaxonomyWEF Skills Taxonomy 2021 — Building a Common Language for Skills at Work. Opens in new tab.

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Sources:Pathsmith™ Durable SkillsPathsmith™ Durable Skills Framework — America Succeeds + CompTIA. Opens in new tab.O*NET v30.2O*NET Resource Center — Occupational Information Network, v30.2 (Sept 2025). Opens in new tab.
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Related titles
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RAPIDS apprenticeships
—
O*NET skills
Operation and ControlOperations MonitoringQuality Control AnalysisCritical ThinkingMonitoringTime ManagementTroubleshootingJudgment and Decision MakingEquipment Selection
Knowledge domains
MechanicalMathematicsProduction and ProcessingDesignEngineering and Technology
Abilities
Near VisionVisualizationControl PrecisionFinger DexterityArm-Hand SteadinessManual DexterityInformation OrderingWritten ComprehensionOral ComprehensionDeductive Reasoning
Work styles
Attention to DetailDependabilityCautiousnessAchievement OrientationPerseveranceIntellectual Curiosity
Technology
Computer aided manufacturing CAM softwareSpreadsheet softwareOffice suite softwareWord processing softwareComputer aided design CAD software
Tasks · seed anchors for statements
  1. Study blueprints, drawings, and sketches to determine material dimensions, required equipment, and operations sequences.
  2. Set up and operate machines, such as lathes, drill presses, punch presses, or bandsaws, to fabricate prototypes or models.
  3. Program computer numerical control (CNC) machines to fabricate model parts.
  4. Inspect and test products to verify conformance to specifications, using precision measuring instruments or circuit testers.
  5. Cut, shape, and form metal parts, using lathes, power saws, snips, power brakes and shears, files, and mallets.
  6. Rework or alter component model or parts as required to ensure that products meet standards.
  7. Drill, countersink, and ream holes in parts and assemblies for bolts, screws, and other fasteners, using power tools.
  8. Grind, file, and sand parts to finished dimensions.
CIP education codes
48.0506

Sources: O*NET v30.2 (CC BY 4.0), SkillsCrosswalk.com, LER.me®, Anthropic Economic Index, SAFI (Jadhav & Danve, 2026), WEF Skills Taxonomy 2021, Pathsmith™ Durable Skills Framework. © 2026 EBSCOed.