finishing.com -- The Home Page of the Finishing Industry
We've been striving for 23 years to build the
world's best website -- it's worth your time smiley
    no popups, no spam
HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics
topic 50121

Patina for Pewter


September 28, 2008

Q. We are a company producing cast pewter bowls and decorative items. We have been in business for almost twenty years.
The alloy we use is 92% tin, 7.5% antimony, .5% copper.
We know of a pewter artist in Norway who produces pieces with beautiful patinas in a variety of colours (gold, purple, blue) - these are colours we see on the surface of our pewter when it has solidified in the melting pot at the end of the day. We have also seen the similar colours in some Canadian pieces. We would like to know how to reproduce these colours in our work. Are there oxidizing agents we can use? Is the patina dependent on copper composition? Are the colours dependent on temperature? How can the colours be controlled.

Ray Will
Manufacturer - pewter casting - St. Philips, Newfoundland, Canada

October 2, 2008

A. There is at least one possible process-according to one old ex USSR book, you can electrolytically colour tin with next solution: 8 gm copper sulphate, 125 gm sodium tetraborate ;1 lit water,0.005 A/dm2, 3-20 minutes, you must use copper anode, object=cathode! Yellow,red,green and blue colour. Hope it helps and good luck!

Goran Budija
- Zagreb, Croatia



November 6, 2013

Q. Hi there,

I am an amateur pewter enthusiast and I am hoping someone can advise me on how to create a gold or coppery patina on pewter. I would rather do this chemically than use a gold stain or paint, as this is intended for rings and a paint would probably wear off quickly.

I have access to two small kilns, so heat treatment is also possible depending on what you folks can suggest.

Many thanks

Danielle Eriksen
unofficial pewtering apprentice! - Cape Town, South Africa



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 Comment to THIS thread START a NEW threadView CURRENT 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


©1995-2018 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.