Uploaded May 2026 | Updated September 2026, 3 hours ago
In chapter 1 lesson 9, we introduce G-code and how CNC machines understand and execute your designs.
We’ll break down how machines track position using machine home and work coordinate systems, and how offsets allow you to define where your part exists in space. From there, we’ll walk through the basics of G-code, including common commands for movement, spindle control, feed rates, and tool changes. You’ll also see how these commands come together to control every step of the machining process.
What you’ll learn in this episode:
• The difference between machine home and work coordinate systems
• How work offsets define part position in the machine
• What G-code is and how it controls CNC machines
• Common commands for movement, spindle speed, and tool changes
• How CNC programs are structured and executed
By the end of this lesson, you’ll understand the language behind CNC machining, helping you connect your designs to how machines actually interpret and produce them.
⏰ Timestamps ⏰
00:00: Intro
00:11: CNC programming and G-Code
02:35: Understanding Machine Coordinates and Work Offsets
05:55: G-Code Basics and CNC Commands
08:39: What you'll learn next lesson
Stay tuned for more SendCutSend Education.
Want to rock the same gear as Jake? Grab your SendCutSend merch here: store.sendcutsend.com
Custom sheet metal manufacturing and processing. From prototype to large production runs, get sale and assembly ready custom parts shipped in as little as 2 days; No minimum quantities; free US shipping on orders over $39; made In the USA: bit.ly/4dwW6rU
Follow us on Instagram: instagram.com/sendcutsend
SendCutSend Education was filmed by Keaton Bowlby.
In chapter 1 lesson 9, we introduce G-code and how CNC machines understand and execute your designs.
We’ll break down how machines track position using machine home and work coordinate systems, and how offsets allow you to define where your part exists in space. From there, we’ll walk through the basics of G-code, including common commands for movement, spindle control, feed rates, and tool changes. You’ll also see how these commands come together to control every step of the machining process.
What you’ll learn in this episode:
• The difference between machine home and work coordinate systems
• How work offsets define part position in the machine
• What G-code is and how it controls CNC machines
• Common commands for movement, spindle speed, and tool changes
• How CNC programs are structured and executed
By the end of this lesson, you’ll understand the language behind CNC machining, helping you connect your designs to how machines actually interpret and produce them.
⏰ Timestamps ⏰
00:00: Intro
00:11: CNC programming and G-Code
02:35: Understanding Machine Coordinates and Work Offsets
05:55: G-Code Basics and CNC Commands
08:39: What you'll learn next lesson
Stay tuned for more SendCutSend Education.
Want to rock the same gear as Jake? Grab your SendCutSend merch here: store.sendcutsend.com
Custom sheet metal manufacturing and processing. From prototype to large production runs, get sale and assembly ready custom parts shipped in as little as 2 days; No minimum quantities; free US shipping on orders over $39; made In the USA: bit.ly/4dwW6rU
Follow us on Instagram: instagram.com/sendcutsend
SendCutSend Education was filmed by Keaton Bowlby.
