I have a potential customer asking me to engraving a bunch of these mugs. I'm 99% sure CerMark won't work on these, especially since I have a 35 watt laser. He told me the undercoating of the mug is stainless steel but I still don't think I can laser it directly. I'm pretty sure the laser beam won't make any mark on the copper finish. I think he is hoping that it would be like engraving something powder coated. Am I right in my assumptions?
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