loss of power in middle of job?

[Craig Hogarth]

I've been doing a lot of plastic lately and on occasion, in the middle of a job, the laser is unable to raster through the cap. I end up stopping the job, and starting a new one with a little more power and engraving bottom up.

I had it happen on marble once a month ago, but I think that was a bad file. Now it only happens on plastic. I'm wondering if I'm losing power in the middle of a job or maybe it's the way the plastic was made.

any ideas?

[David Lavaneri]

Craig,

If you're only seeing this in plastic, it's probably an inconsistent cap thickness.

Some manufacturer's material is more consistent than others.

David "The Stunt Engraver" Lavaneri