Stainless steel is an alloy of iron and some chromium ... The calcium oxide washes off but the chromium sulfate causes the etch. Next time you’re at your local space, give this a try.

[Brain] wanted to mark some scissors with his Ortur laser engraver. The problem? The laser won’t cut into the hard metal of the scissors. His solution? Smear the scissors with mustard. No ...

Burnley Council is delighted to announce the installation of a new etched stainless steel panorama at the Singing Ringing ...