Hello,
I have a order for 500 batons to be engraved with 3 lines of text each 1/3 around the dia. of the baton, same ones as used in track.
Anyway they are silver aluminum and I used Cermark on it but it didnt engrave black like it does on other metals I have marked but instead comes out a gray/green look to it.
Is there something I need to do different? Use other marking compound.
Any help would be great.

Thanks,
Curt