🧰 Spindle Capabilities for Machining Aluminum & Non-Ferrous Metals

💡 Can I Use My Woodworking Spindle to Cut Metal?

In general, woodworking spindles can machine non-ferrous metals such as aluminum, brass, and copper—as long as proper tooling, feeds, and speeds are followed. While not specifically designed for metal, many users have seen successful (though slower) results when cutting aluminum with our systems.

⚠️ Note: Our ATC systems use a 4-pole, 800 Hz spindle, which is not designed for cutting mild steel, though one customer has reported limited success.

🌀 Understanding Induction Motors vs. Electric Motors

All our spindles use induction motors, not traditional electric (brushed) motors. Here's the key difference:

• Induction Motors (Spindles)

  • Brushless design — no brushes to replace

  • Powered by electromagnetism

  • Longer lifespan and less maintenance

• Electric (Brushed) Motors

  • Use brushes to transfer electricity

  • Typically found in hand routers

  • More prone to overheating and wear

🔢 What Are “Poles” in a Spindle Motor?

The term “poles” refers to the number of electromagnets inside the stator core of the motor.

• More poles = more torque at lower RPMs

• Our spindle lineup includes:

  • 2-Pole Motors: Standard in most systems

  • 4-Pole Motors: Standard in all ATC systems (with ceramic bearings)

⚙️ Speed Ranges & Machining Potential

While we haven’t tested all low-end RPMs extensively, we’ve achieved great results machining aluminum at 10,000 RPM using an O-flute bit.

🛠 Tips for Machining Aluminum

• Always start with the bit manufacturer’s recommended feeds and speeds

• Adjust only one variable at a time (either feed rate or RPM)

• Monitor spindle load and chip evacuation closely to avoid stalling