I have just picked up a job that means rastering on glass tumblers. I have just noticed that the quality of the rastering is a bit odd. There are occasionally sections where the glass has not been lasered for maybe 1/4 of an inch. This may happen 3 or 4 times across an bit of rastering 2" wide.
I also noticed on close inspection that occasionally the laser would go beyond the drawn rastered area for about 1/16 ". Not leaving a clean marked edge.
I have cleaned the lenses, the encoder strip, cleaned and greased the running track, Found that the x belt was a little loose and retensioned it.
The overshooting of the raster area is considerably better but it still misses the odd bit of glass. I am running at 75 speed 100 power,600 dpi, on tempered glass. Coating the surface of the glass with liquid soap.
Any suggestions what it may be?
The laser head does rock a bit on the track. Is this normal. Is it adjustable?
Any Ideas greatfully received.
Epilog 24TT 35 watts.