finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 12286

Removing Liver-Of-Sulphur oxidation?


Sparex Pickling Compound




Pickle Pot

 

I got slightly carried away using Liver of Sulphur [linked by editor to product info at Amazon] and the sterling pieces I was oxidising now have a battleship-grey coating. The coating seems impervious to any non-destructive removal method I can think of. I've tried hot ammonia, hot Sparex pickle, and even paint stripper. The coating ignored them all. I'll be grateful for any suggestions.

Mairead MacDonald
- Boston, Massachusetts


As a former jeweler, I have often used jeweler's tripoli [link to product info at Amazon by ed.] on a buffing wheel to remove liver of sulphur oxidation. Just be very careful. Keep the pressure light because tripoli cuts fast and can easily cut away the silver. Keep the object moving across the buffing wheel (or keep the buffing wheel moving if the object is stationary). jeweler's rouge [linked by editor to product info at Amazon] may also work, but is a polishing compound rather than a cutting compound like tripoli, so it will be slower than tripoli. If you use tripoli, it will leave a dull finish that can be polished to a gloss with rouge.

John Segal
- Nanaimo, BC, Canada



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.