Laser only cutting through top and bottom

Liam

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Laser

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LightBurn

248

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2023-05-31

I’m having a strange issue with the cut pass. The top and bottoms are cutting through fine however the sides only cut part way through. The “frame” is set to line, 6 passes 45%@700mm/sec.
Any suggestions on why this may be happening? I’m new to LB but it’s a superior product (except it doesn’t support my rotary but I digress)

Henry

2023-06-01

"45%@700mm/sec."
That seems extremely aggressive for a diode laser. Perhaps it’s really 700 mm/min, which may still be too fast.

"why this may be happening"
Most diode lasers have a rectangular “spot” at the focal plane, typically wider than it is tall. If yours is like that, then:
Lines parallel to the X axis (left-right) cut faster
Lines parallel to the Y axis (front-back) cut slower
The only solutions:
More power
Less speed
More passes
Each choice has its own tradeoffs that you’ll discover as you try them out.

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