Hi Lior,
I would recommend image projection technique rather than contact ablation for
this depth. In both cases chem etched or laser patterned stainless steel .004"
will work OK.
Regards,
Alex Pozdin,
Director of Engineering
5 Danuser Dr.
Hermann, MO 65041 USA
ph. 573-486-5500
fax 573-486-5540
e-mail: apozdin@laserusa.com