Sometimes 13N10 or LM338 die and need to be replaced. We will guide you how to do that.
- use a G-2 lens for laser cutting.
- setup a perfect focus on a G-2 lens (make sure that focal range is something like 4-8 mm)
- make sure that a plywood is very dry (you may use a 3D printer bed to warm it up)
- speed parameters should be 50-150 in your g-code
- make sure that the plywood is not specially treated with anti-inflammable materials
- make sure that the laser runs full power and you have enough power that goes to the laser
- make sure that the lens is clean and has no dust on it.