corten steel

Has anyone here heard of and tried to cermark on corten steel? I had a customer call and ask if we can do a sample and maybe 200. they are 3" x 3" I am testing the logo on other material to see what it looks like then maybe the corten stuff. Thanks for any info. Jaime

I don't think this will work...........http://www.corten.com/flat-sheets.html rusted steel will cover up cermark and removing rust will only allow for more rust....

just my thoughts but interested in your results....long term