I have a (potential) application that needs some 0.0015" (~0.038 mm) lines marked in anodized aluminum, spaced 0.0015" apart. The application is related to microscopic measurements of small things. I'm seeing fiber laser minimum line widths as 0.01 mm, which seems to indicate it's doable.
What's the smallest size you guys have been able to mark? I spoke with Keyence and they suggested their UV wavelength laser for this, but they haven't been very responsive with getting me samples.
The customer has used some type of printing process that has worked in the past, but would like to directly mark some of their metal pieces.