Photoengraving and etching

I have been looking for the photoengraving process with potassium
dicromate and gelatine since a long time.But it seems that it is a
process already forgotten. We manufacture weapons for martial arts,and
the process will be of great importance for us. Please if it is
possible for you to give us the process we will really appreciate it.

thank you in advance for your attention to this e-mail.

Ansel Niederheitmann Niederheitmann Gewerbe