Aerospace Lapping Machinist – Precise Finishing

Cassavant Machining, Inc.; Phoenix (AZ); On-site; USD 34,440 - 41,328; Full time

Benefits offered by this job

Medical, dental, vision, disability &

Life insurance

Job summary

CMI Group in Phoenix, AZ is seeking a Lapping (Lap) Machine Operator for the Day shift to join a defense and aerospace machining cell. This role focuses on precision finishing of aircraft components to micro-inch tolerances, using lapping, polishing, and honing processes.

You will set up machines, select slurries, inspect with micrometers and height stands, read blueprints, and perform calculations to maintain tight tolerances. Collaboration with QA and manufacturing engineering is expected.

Qualifications

• Education: High school diploma or equivalent.
• Experience: 1–5+ years in close-tolerance manual machining or grinding in aerospace manufacturing.
• GD&T proficiency: strong understanding of GD&T principles.
• ITAR compliance: must meet ITAR requirements as a U.S. Person due to defense data restrictions.

Responsibilities

• Machine setup and operation of manual, power-stroked, or automated lapping, polishing, and honing machines.
• Mix and apply correct abrasive compounds and polishing media based on blueprint specs.
• Use calibrated measuring tools to verify dimensions (micrometers, bore gauges, air gauges).
• Read and interpret engineering drawings, CAD models, and process routers for product sequences.
• Compute clearances, tapers, and material removal rates to maintain tolerances.
• Deburr and package finished aerospace parts.
• Collaborate with QA, manufacturing engineering, and production teams to improve efficiency.

Skills

Close-tolerance machining

GD&T proficiency

ITAR compliance

Communication skills

Education

High school diploma or equivalent

Job description

CMI Group in Phoenix, AZ is seeking a Lapping (Lap) Machine Operator for the Day shift to join a defense and aerospace machining cell. This role focuses on precision finishing of aircraft components to micro-inch tolerances, using lapping, polishing, and honing processes.

You will set up machines, select slurries, inspect with micrometers and height stands, read blueprints, and perform calculations to maintain tight tolerances. Collaboration with QA and manufacturing engineering is expected.