CNC Crash Course #8 – Chips Fly on the First Real Cut
🎥 Video
📝 Overview
This lesson marks a milestone in the CNC Crash Course series: the first real cutting pass. After learning G‑code basics, coordinate modes, spindle control, and Z‑zeroing, this is where everything comes together. The video shows the 3018‑style CNC making its first actual cut, demonstrating tool engagement, chip formation, and safe cutting behavior.
This is the moment beginners finally see the machine “come alive,” and it reinforces all the foundational steps covered so far.
📌 What You’ll Learn
- What a proper cutting pass looks and sounds like
- How chip formation indicates correct feed and speed
- How to secure material for a safe first cut
- How to monitor the machine during early cuts
- Why shallow passes are safer for beginners
- How to avoid stalling, burning, or breaking bits
📂 Tools & Software Used
- 3018‑style CNC router
- Candle (GRBL Control)
- GRBL firmware
- End mill (typically 1/8″)
- Wood or soft material for the first cut
- Clamps or double‑sided tape for workholding
📘 Description (based on the video content)
This lesson shows the CNC making its first real cut after completing all the setup steps in earlier videos. You see chips forming, the tool moving along a programmed path, and the machine behaving under load. The video highlights the importance of proper Z‑zeroing, correct spindle control, and safe feed rates. It’s a confidence‑building moment for anyone new to CNC machining.
💡 Key Takeaways
- Clean chip formation means the tool is cutting efficiently.
- Light passes reduce the risk of stalling or breaking bits.
- Proper Z‑zeroing ensures the cut starts at the correct depth.
- Watching and listening during early cuts helps you learn machine behavior.
- This is the first step toward more advanced toolpaths and materials.
🔗 Related Lessons
- CNC Crash Course #7 — Perfect Z‑Zero with a Touch Puck
- CNC Crash Course #10