Issue: Vibration During X-Axis-Cuts

LowRider CNC Troubleshooting
1

Hi everyone,

I recently built an LR4 CNC with no prior experience and have been enjoying it so far. However, I’m encountering an issue with my setup during more aggressive cuts.

Problem:

When cutting along the X-axis (both directions), the gantry vibrates. Y-axis cutting movements stay smooth.
Despite the vibration, the end result appears fine to me.
Here are some slowmotion videos from the X-axis cuts:
DOC-10mm-square-optimized
DOC-5mm-square-optimized

Cutting Parameters:

  • MDF
  • 1750 mm/min
  • Depth of Cut: 10 mm
  • 6 mm 1-flute upcut endmill
  • Stepover: 50%
  • Makita RT0702C, dial set to 3

Machine Details:

  • Working area: 500 mm x 1000 mm
  • SKR Pro V1.2
  • TMC2209
  • Firmware: Marlin (default settings, 0.9A for the steppers)

I’ve seen Dougs Youtube Video (here) where he cut MDF with 12 mm DOC and 75% stepover at speeds beyond 100 mm/s, so I believe my settings should be manageable.

Does anyone know what might be causing this issue? I’d appreciate any insights or advice.

Thanks in advance!

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