K 40 Will engrave but it won’t cut

I can’t get the K 40 to cut 4 mm acrylic, I can use the same speed and power on my 5.5 watt Diode laser and it will cut it. 300mm/sec. 95% power
What am I doing wrong?

If you have

  1. properly working tube
  2. clean and aligned optics
  3. proper focus

They work…

Which one are you missing?

Most generally it’s the alignment…


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