Ideas on how to etch brass mail box (3" deep)

Hi! I’m tinkering around with my old corroded mail box. I sanded it down to a shiny brass, I even already spray painted it , my idea was to use the paint as a mask, lasering off my design, then etching the brass with ferric chloride. but then I realized the box is 3" deep, so it will not fit even without tray.
any good ideas on how to proceed? I though maybe I can laser cut a thin plastic, and use that as a mask to somehow remove selectively paint? I have a cheap sandblaster: maybe make an acrylic mask, then use to blast off the paint? perhaps forget about etching and just keep blasting into copper?

Solid beginnings of ideas.

Check out #11 for some more:



Dec '18

You can always make a tape stencil then black the brass.


So this is outside the scope of the :glowforge:laser but maybe look into electro-etching. Electrolytic Etching of Brass

A vinyl cutter would be a far better solution.

The laser is not always the best solution to every problem.


This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.