CNC Setup Machinist

CNC Setup Machinist (or CNC Set-Up Operator) is responsible for preparing, calibrating, and tooling computer numerical control machines —such as mills or lathes—so they can run production jobs safely and accurately. Set Offsets & Zero Points: Establish tool length offsets, tool diameter compensations, and part zero (work coordinate system like G54) using edge finders, tool setters, or probes.

Nesco Resource has partnered with a growing manufacturer to identify a CNC Setup Machinist


Ronkonkoma location

salary: 25-35 hour flexible depending on expereince

CNC Setup Machinist (or CNC Set-Up Operator) is responsible for preparing, calibrating, and tooling computer numerical control machines—such as mills or lathes—so they can run production jobs safely and accurately. [1, 2, 3]

Key Responsibilities

• Read Blueprints & Setup Sheets: Interpret engineering drawings, digital work instructions, and tool lists to understand part specs and tolerances. [1]

• Install Tooling & Fixtures: Load cutting tools, toolholders, vises, chucks, or custom soft jaws into the machine. [1, 2, 3]

• Set Offsets & Zero Points: Establish tool length offsets, tool diameter compensations, and part zero (work coordinate system like G54) using edge finders, tool setters, or probes. [1, 2]

• Load & Verify Programs: Transfer G-code part programs into the controller and run dry cycles or single-block checks to prevent tool crashes. [1, 2, 3]

• First Article Inspection: Machine the first piece, measure it using precision instruments (micrometers, calipers, height gages), and adjust tool wear or geometry offsets to hold tight tolerances. [1, 2]

• Machine Maintenance: Monitor coolant concentration, lubrication levels, and check for mechanical or air/hydraulic pressure issues. [1, 2]

---

Step-by-Step CNC Setup Workflow

• Clean & Inspect: Clear chips and debris from the machine table, bed, or vise surfaces.

• Pre-check Levels: Verify machine warm-up, way lube, pneumatic pressure, and coolant concentration (typically 5–8%).

• Load Tooling: Insert required tools into toolholders and place them in the automatic tool changer (ATC) or spindle.

• Set Tool & Work Offsets: Measure tool lengths/diameters and touch off or probe your part zero (X, Y, and Z axes).

• Install Workholding: Secure the raw material blank or casting using vices, clamps, or vacuum fixtures.

• Load & Test G-Code: Upload the program file, run a graphics simulation or a slow dry run above the part, and keep a hand on the feed hold button. [1, 2, 3, 4]

Watch a visual walkthrough of a standard CNC mill setup and edge-finding procedure:Nesco Resource offers a comprehensive benefits package for our associates, which includes a MEC (Minimum Essential Coverage) plan that encompasses Medical, Vision, Dental, 401K, and EAP (Employee Assistance Program) services.

Nesco Resource provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.