Uploaded September 2026 | Updated September 2026, 3 hours ago

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Are you still running a standard Makita trim router on your large-format CNC? In this video, we upgrade the Genmitsu ProVerXL 4x4 with SainSmart’s heavy-duty Genmitsu 2.2kW liquid-cooled spindle to see if it’s worth the hype.

We'll walk through the entire setup from plumbing the coolant lines to programming the VFD for both offline and Candle software control, and run a sound test comparison with the Makita trim router. Then, we'll push it through a variety of materials to test high speed cutting performance and precision, and put it through a multi-hour 3D carving job to see if this liquid-cooling system can actually handle the heat.

Gear & Tools Used
Genmitsu 2.2kW Liquid-Cooled Spindle Kit:
sainsmart.com/products/water-cooled-spindle-motor

Genmitsu ProVerXL 4x4 CNC Machine:
sainsmart.com/products/proverxl-4x4-cnc

Easel Pro CAM Software:
easel.com

VFD Guide Quick Reference
Offline Control: Set P0-02 to 0, and P0-03 to 4.
Candle Software Control: Set P0-02 to 1, and P0-03 to 2.
Candle Console Commands: $32=0 (Laser mode off), $30=24000 (Max RPM). Set minimum speed to 5000 and max to 24000 in Candle settings.