Sandstone Thirstystone coasters

[bill.m.davis]

Has anyone ever tried that method for stone? I am not sure a clear-coat spray would be enough. I think you need a different substance that reacts to the laser…

This is kind of weird, but something that could be tried… (mustard?)

Metal marking on a knife blade with mustard

After reading a post suggesting mustard could be used to mark metal I gave it a try. I had an old knife kicking around from my sailor days. It served me well (and still does) so I decided to adorn it with the name of the ship we sailed on. I smeared some dijon mustard on it with a Q-tip and used an engraving speed of 1000, power 50. I am totally impressed with the result however a few attempts on different metals did not fair so well. This particular metal obviously reacts well with whatever ch…