raster lines

[normd]

I've started the Tea Box and the cover came out with raster lines here ans=d there. How do I minimize them in the carving process?

Norm D

[Kenm810]

Hi Norm,

It's just a though, but sometime ago before I started using a Down Draft System and added an additional dust vent.
I was having problems with random line across a few projects. What I found was dust and chips building up under the pressure rollers
and slightly effected the bit depth as the machine was carving, but worst I found that the dust and chip were also getting under the traction belts
and sticking to the inside of the belts, as the belts traveled back and forth it would randomly lift my project board causing the bit to cut a little deeper.
I'm sure there maybe several other reasons for the Lines, but cleaning and keeping an eye on these spots took care of mine.
Just passing along a little information.