finishing.com -- The Home Page of the Finishing Industry

-----

Darken nickel marked with a laser

I am about to begin laser marking chrome plated items. The procedure will burn through the chrome and actually mark the nickel. I need something that will make the nickel mark as dark as possible. Can you help?

Thanks,

Joe Bottieri
Engraving - Indian Harbour Beach, Florida, USA
2004

Black nickel might work. It tends to be a very dark grey rather than a true black. It also is a very picky bath to run.

James Watts
- Navarre, Florida
2004

2004

Black colour for nickel:

1 lit water
0,5 gm potassium thiocyanate ⇦ on eBay or Amazon [affil link] (KCNS)
5 ccm H2SO4
25 ccm hydrogen peroxide(30%)
temp.15 °C,cca. 15 min.

Use only fresh solution!Good luck!

Goran Budija
- Cerovski vrh Croatia

No dead threads! If this page isn't already on the Hotline your Q, A, or Comment will move it there.

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: