Introduction to CNC Technology

What is CNC Technology?


CNC Technology


  • CNC stands for “computer numerical coding.”
  • Design software translates designs into G-code which then read by the CNC machine.
  • The Earliest CNC machines appeared in 1940
  • CNC milling is a subtractive method that removes material from a chunk of metal using drill bits. 
  • CNC machines use either 1, 2, 2.5, 3, or 5 axis.

What is CNC Machining and How Does it Work?




Can you think of anything you use that may have been made with CNC technology?

CNC Technology for Jobs & Employment 


Manufacturing Worker Deficit

(source: American factories are desperate for workers. It’s a $1 trillion problem - CNN)

  • American manufacturing activity is at a 37 year high as of March 2021.
  • As many as 2.1 manufacturing jobs are projected to be unfilled through 2030.
  • Part of the shortage is due to concerns about globalization and automation.

Types of CNC Jobs

  • CAD Designer: Models designs that are translated into G-Code.
  • CNC Mechanist: Programs the machinery  and assess mechanical issues.
  • CNC Operator: Stocks material and runs the machine. 

Organizations for CNC Training

Jane Addams Resource Corporation (JARC)


Jane Addams Resource Corporation (JARC)

  • 5 free programs available: Mechanical Assembly, CNC Operators Fast Track, Manufacturing Bridge Program, Welding Fast Track, Brake Press Fast Track
  • 1 paid program available for 3-D printing + forklift certification ($250)
  • Free adult education in reading, language, math and computers. 


Program Locations



640 E. 79TH ST., CHICAGO, IL 60619


Daley College & CCC


CCC Programs


  • Communications Technology
  • Computer Numeric Control Machining
  • Electrical Construction Technology
  • Factory Automation
  • Quality Assurance
  • Welding

Daley College Manufacturing Technology & Engineering Center

  • 7500 S Pulaski Rd, Chicago, IL 60652
  • Basic certificates (16 credit hours) and advanced certificates (37 credit hours)  available

CNC Technology for Art and Design

Can you think of designs you want to fabricate with a CNC machine?


What makes CNC a better  choice for making that object than 3D printing or laser cutting?

Machines for Hobbyists 

Carbide Shapeoko 4 Standard

  • Dust boot included 
  • Work area: X-axis: 17.5” Y-axis: 17.5” Z-axis: 4”
  • Cost: $1,700

Inventables X-Carve 1000mm

  • Uses both 1/4” and 1/8” shank diameter bits 
  • Work area: X-axis: 29.5” Y-axis: 29.5” Z-axis: 2.5”
  • Cost: $2,299

Inventables Carvey

  • Wood, Plastic
  • Work Area: X-axis: 12 inches , Y-axis: 8 inches , Height: 2.75 inches
  • No longer available for purchase

Design Software


Easel Walkthrough