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.

Question- Does Cermark products works with Casted Aluminum?

Answer- The LMM-14, LMM-6000 and ULTRA should mark cast aluminum, as always, the customer must run the test grid to determine the proper settings for their laser that mark the cast aluminum.