A quick wipe with acetone will solve most of that. I think nanoparticles in plastic stock for tracing will be the future here, and in many recycling and corprat

A quick wipe with acetone will solve most of that. I think nanoparticles in plastic stock for tracing will be the future here, and in many recycling and corprate dumping issues. For now, the most effective tracing would be localized nozzle temp effects, inferring equipment and software by toolpath, and basic composition analysis. However, just particulate dust embedded in the plastic may be enough to determine something useful about mfg location. Somehow, I doubt it will be anything basic police work can't uncover. Treating 3d guns as easier to produce than with hardware store parts does not reflect the current state of affairs. A trip to home depot will produce a superior slam fire shotgun with no welding, or machines beyond a drill and file. Its alarmism and fear mongering.