No cost, No passwords, No popup ads, No AI
-- just hobbyists & pros helping each other
we earn from 'affiliate link' purchases

Curated with aloha by
Ted Mooney, P.E. RET

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

  The authoritative public forum
  for Metal Finishing 1989-2025

-----

Copper Anodes Darken

Sir,

In my rochelle copper plating, copper anodes are covered with dark maroon (blackish) deposits. After completing process these deposits disappear and anodes leaves white colour. Please help me to tell about any deficiency in my solution.

Thank You.

Ajay Aggarwal
Aggarwal Steels. - Panchkula, Haryana, India.

Dear Ajay,

You have a Sodium Cyanide deficiency. Or too large a cathode area causing yr anodes to polarise when worked.

Khozem Vahaanwala
Saify Ind

Bengaluru, Karnataka, India

How often do you use this bath?

Michael Brewington
- Salisbury, Maryland, USA

adv.: Supplier of Copper Anodes, Nickel Anodes, Bismuth Metal, & Other Metal Products for Industry & The Arts

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

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: