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. 

Question- How do I know the production date of the Cermark LMM6000 product I have purchased ? The label shows 91025 and I don't know how to interpret it. 

Answer- A paste lot-91025 was produced on 07/05/2021, we list all CerMark products with a shelf life of 2 years from date of manufacturing. This shelf life was introduced so that customers can maintain documentations for auditing purposes, the LMM-6000 Paste will produce quality laser marks if the paste consistency is maintained well beyond the 2 years.   In the spray cans you can see a number of 5 digits. (Example: 21317) This means:  21 is the year. 317 is the day of the year when them were produced. (Julian Date).

Question- I need a small amount of something that will mark well on Nickle plated stainless steel with a Co2/ 40w  Glowforge Plus?

Answer- The Cermark product can be used on a Nickle Coated SS. The laser Processing will be critical to getting a good mark with contrast and not dissolving or removing the Nickle Coating. The glass tube laser such as the Glowforce sometimes has trouble maintaining a steady output power for this process. The sealed metal laser tube with RF control has better control over the marking process with Cermark. You can try Ultra  2 Oz can. and make different tests This will allow you to analyze the situation and see it continues.

I would recommend the LMM-14, but the LMM-6000 should also work.

 https://www.cermarkusa.com/#!/GSLA-ULTRA2-Cermark-AEROSOL-SPRAY-CAN-2-OZ-BLACK-FOR-METALS-ON-SALE-UPS-GROUND-ONLY/p/221760403/category=126766514