By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Oct 22nd

What grade

All Topics | Latest Posts

Search for:  in Thread Title in  
Harry Wilkes14/10/2019 10:28:14
avatar
728 forum posts
60 photos

I've noted on many occasion the wheel hub caps on my 3" Burrell tarnish easily and have copper spots appear on them so I'm thinking that over the winter I may make some new ones, so what's the best grade of brass to use to get a good finish and polish ?

H

pgk pgk14/10/2019 11:26:36
1480 forum posts
285 photos

Is it daft to suggest gilding?

Harry Wilkes14/10/2019 14:36:37
avatar
728 forum posts
60 photos

Thanks for suggestion but I don't think it would be suitable, correct me if I,m mistaken

H

JasonB14/10/2019 14:40:52
avatar
Moderator
16451 forum posts
1741 photos
1 articles

gold plating won't tarnish

HOWARDT14/10/2019 14:44:36
462 forum posts
14 photos

C464 marine grade, will still tarnish but won’t pit.

old mart14/10/2019 14:47:38
731 forum posts
69 photos

I seem to remember a polish for brass which claimed to extend the life between polishing.

Brian Wood14/10/2019 15:55:12
1985 forum posts
37 photos

Harry,

Why not try a clear varnish after polishing? Rustins made a good one that works well and would save you the effort of making new caps.

I agree with you that gold plating might look too bright; it does dull slightly with aging but the process is slow.

Regards

Brian

Edited for punctuation.

Edited By Brian Wood on 14/10/2019 15:56:04

Grindstone Cowboy14/10/2019 16:44:50
133 forum posts
1 photos

I can heartily recommend Renaissance Wax to prevent tarnishing once you have polished them. And for the polishing, I'd go with Solvol Autosol.

(Other suppliers are available, it was just the first link I found)

Rob

pgk pgk14/10/2019 16:56:23
1480 forum posts
285 photos
Posted by Brian Wood on 14/10/2019 15:55:12:

I agree with you that gold plating might look too bright; it does dull slightly with aging but the process is slow.

I believe it's possible to get gilding foils in all sorts of metal colours and shades Also many moons ago I dismantled and re-lacquered an ancient saxaphone using cellulose rattle can that was essentailly a clear coat with a tint of brass. Not sure if that's still available (came from an auto paint shop in Uxbridge)

pgk

SillyOldDuffer14/10/2019 17:58:15
4789 forum posts
1011 photos

The copper spots are appearing because of de-zincification suggesting the hubs are made from an ordinary high zinc brass. This stuff is easy to buy and nice to machine but not good at resisting corrosion.

An alternative might be Naval Brass (CZ112) or CZ132, or even a low tin Bronze like Admiralty Brass.

Finding someone to sell it in small quantities may be tricky. My quick web search only found people set up to sell to industry. Dunno how big the hubs are but if there's enough metal in scrap plumbing fittings, they're made of corrosion resistant alloys.

Dave

David George 114/10/2019 18:34:57
avatar
952 forum posts
310 photos

You can get naval brass from M-machine metals.

David

Harry Wilkes15/10/2019 16:07:10
avatar
728 forum posts
60 photos

Thanks for all the answers, I don't mind a quickly with the Brasso but the copper colored spots on the present one do annoyed me wink

H

Mick B115/10/2019 17:23:15
1215 forum posts
70 photos
Posted by Brian Wood on 14/10/2019 15:55:12:

Harry,

Why not try a clear varnish after polishing? Rustins made a good one that works well and would save you the effort of making new caps.

...

Brian

Their clear metal lacquer works well for me.

Neil Wyatt15/10/2019 18:59:31
avatar
Moderator
16662 forum posts
687 photos
75 articles

I used Windsor and Newton spray lacquer on the brass parts of this Westone Thunder 1 when I smartened it up. It works well and can be removed with White Spirit, it's meant for protecting artworks and for conservation of articles. The original lacquer came off with meths so may have been shellac.

Neil

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Support Our Partners
ChesterUK
Meridienne; London MES
Ausee.com.au
TRANSWAVE Converters
cowbells
Eccentric July 5 2018
Eccentric Engineering
Warco
emcomachinetools
Allendale Electronics
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest