For engraving, 100% speed and 55% (600dpi), 65% (400dpi) or 75% power (300dpi) â€“ Epilog Manual.
For cutting, use 5000 ppi frequency. Remove the top layer of paper.
REMEMBER THAT ACRYLIC IS FLAMMABLE - DO NOT LEAVE THE LASER UNATTENDED!
Moleskine covers contain PVC, and should not be engraved on a laser cutter - they contain harmful toxins that can damage you & the laser!
For phones that are metallized (such as this Motorola RAZR) use standard Anodized Aluminum settings.
[Need to do larger phone survey of models! Please add data!]
Speed and Power level test for Cermark spray on brushed aluminum:
Some banding appears from the plastic case molding process. 100% speeed 50% power on a 35W laser has worked out for us so far. (30% is much too low.)
So far, these cannot be (easily) etched or marked because the case is made of polycarbonate which turns yellow and chars when laser cut or etched! We've attempted some low power and multi-pass etching, it's promising but so far the demand is pretty low.
It might be worth trying masking tape [My sales rep recommended it for solving those kinds of problems, but I don't have an iBook/MacBook on which to test the theory. Bill]
Sadly the wavelength from CO2 Lasers make it really difficult and almost impossible to engrave on polycarbonate. The only solution (so far) to engrave this material is to use a YAG/Fiber laser. A great example of this technology used on a white MacBook is on the following link to the Epilog's website.