I’ve noticed that in some recent work with 3mm acrylic, cut curves have a sort of stepped/ridged appearance. I’m curious if this is the result of stepper motor resolution, or perhaps the beam power being pulsed rather than continuous. Is this “typical” of “all” laser cutters?
The recommended settings for this material suggested a 5kHz pulse rate, suggesting non-continuous or at least non-flat laser power vs. time curve. I’m curious if we can expect similar appearance in cuts made with the Glowforge. Here are some images showing the cut edges, one with a penny for scale:
The designs were done in Illustrator, so I’m running on the assumption that the splines have no such edged detail in their representation. The cuts were made using an Epilogue laser. I took the photos with an iphone. (…holding a lens assembly scavenged from a recently disassembled Canon G9 to the iphone imager to get up close and personal with the subject. I’m calling the weaknesses of the imagery “artistic”)