The spray stuff in cans.
How can it work, not how does it work.
Can I clean a plate of brass up, spray it with this stuff, let it dry, then burn the etched areas away with a laser the drop it into the ferric chloride ?
I need to get some quite small letters to stand proud of a brass sheet.
Don't mind buying a tin to try it IF it stands a chance of working, alternative is to use a spray can of paint and laser the etched area away.
Anyone done this or seen web sites where it has been done, need to use a laser as all the files are in the laser format.