They're Heeeerrrreee!

[cstroke]

Not sure about diodes, but I bought a spray LBT all purpose black (Laserbond 100) that I spray on stainless and with a Co2 it leaves a nice black marking.

[Joe Jones]

Joe you can etch stainless steel with a blue laser, you coat it with mustard and laser away.
DSCN5107.JPG

The laser may be burning some element in the mustard and staining the metal, with a fairly decent bond, but I doubt the blue laser actually etches the stainless steel itself. I will try it though ...

Pardon me ... Do you have any Grey Poupon?"

Joe

[acourtjester]

I did that with my first laser an Ortur either 5 or 10 Watts, I have not tried it with the newer 70 Watt I bought.