Question- If I were to mark a part  (Low Carbon Steel.)  with the black coating then follow up with the white coating and mark over the black, will that work? I have some parts that the marking is incorrect and I was going to mark over the marking with a black box, but would like to remark the parts with a white marking. Will this work?

Answer- Yes, the LMM-6150 Pearl will mark over the LMM-6000 Black, Be sure the run test marks using the LMM-6150 over the LMM-6000 to determine the best power/speed settings for the look you’re are looking for. 

Quesstion-Can you please advise if Cermark works for sterling silver. I want to engrave a locket with my CO2 50 watt laser. What should my settings be? 

Answer- Sterling Silver will take more heat then if marking stainless. You have to run test marks shown in the  (Optimizing Laser Settings) to verify the best laser settings, you should use a spare part to determine this information. If this part is a cheap sterling silver their may be a clear coat on the surface, if there is the CerMark will not work. The LMM-6000 should work but I would recommend the LMM-14  Aerosol for this metal.  

What is causing the marks not to adhere Improper laser settings ?.

Customers need to do a series of power and speed setting to determine the best settings using their laser system. See attached bulletin for laser setting on ceramics and glass. (Click Here)

Question-Is the LMC-6044P the best product for black marks on ceramic?  Does cold temperature affect the output?

Answer- For laser marking on ceramics, I highly recommend the CerMark ULTRA.