How to set the parameters of laser marking machine to mark black in ezcad?

Parameters for blackening on ABS engineering plastics?Parameters for marking black and marking blue on stainless steel or iron?Can you mark brown on aluminum or anodized aluminum (phone case)?Mine is a 20W ordinary fiber laser marking machine. Laser marking black on plastic, the speed is generally 1000, the power is about 30, the frequency is 20-30, and… Continue reading How to set the parameters of laser marking machine to mark black in ezcad?