How to replate

Metalworking questions in this section please

Moderator: Moderators

Post Reply
User avatar
Puma
Senior Member
Posts: 3910
Joined: Fri Mar 05, 2010 8:40 pm
Location: Bristol
Has thanked: 681 times
Been thanked: 704 times

How to replate

Post by Puma »

Image

I would like to restore these to new - I have a few hundred. They were zinc plated and passivated with some kind of chrome but have not lasted. I would like to know the quickest method for getting them back to new. I tried polishing them but have found it quite slow so maybe an acid bath followed by nickle plating?
User avatar
Razor
Senior Member
Posts: 8760
Joined: Wed Nov 14, 2007 10:21 pm
Location: Northampton
Has thanked: 483 times
Been thanked: 1251 times

How to replate

Post by Razor »

One of my fave youtubers (except Chez of course lol)
I think I'll take two chickens...
User avatar
wine~o
Senior Member
Posts: 26164
Joined: Sat Jan 10, 2009 3:49 pm
Location: hants/dorset border
Has thanked: 1413 times
Been thanked: 3988 times

How to replate

Post by wine~o »

Razor wrote: Wed Sep 02, 2020 6:06 pm One of my fave youtubers (except Chez of course lol)
Who is ??? Have I missed summat ?
Verwood Handyman

_____________________________________________________________________________

If you feel you have benefited from the Free advice given on the Forum, Please consider making a donation to UHM's Nominated charity, read all about it and donate here :

http://www.donnasdreamhouse.co.uk
User avatar
Puma
Senior Member
Posts: 3910
Joined: Fri Mar 05, 2010 8:40 pm
Location: Bristol
Has thanked: 681 times
Been thanked: 704 times

How to replate

Post by Puma »

Hello Razor - a bit lost there mate??

HI Wino
ahfix
Senior Member
Posts: 910
Joined: Thu Jan 25, 2018 11:25 am
Location: Scotland
Has thanked: 61 times
Been thanked: 184 times

How to replate

Post by ahfix »

What are they?
User avatar
Puma
Senior Member
Posts: 3910
Joined: Fri Mar 05, 2010 8:40 pm
Location: Bristol
Has thanked: 681 times
Been thanked: 704 times

How to replate

Post by Puma »

There are a couple of videos here https://www.ebay.co.uk/itm/202790808209
User avatar
Razor
Senior Member
Posts: 8760
Joined: Wed Nov 14, 2007 10:21 pm
Location: Northampton
Has thanked: 483 times
Been thanked: 1251 times

How to replate

Post by Razor »

I'm not sure what happened there :dunno: :lol: :lol: :lol:

Lets try again............

https://www.youtube.com/watch?v=G-PtnwtOR24&t=421s
These users thanked the author Razor for the post:
Puma (Fri Sep 11, 2020 12:23 pm)
Rating: 7.14%
I think I'll take two chickens...
Bob225
Senior Member
Posts: 4665
Joined: Sun Jan 31, 2010 9:21 pm
Location: Kent, Land of Apples and PYO
Has thanked: 94 times
Been thanked: 857 times

How to replate

Post by Bob225 »

is it rust or flux from the weld/braze process ?

I would ask a electroplaters https://staranodising.com/

strip the zinc and powder coat ?
Dave54
Senior Member
Posts: 5063
Joined: Wed Feb 25, 2015 7:20 pm
Has thanked: 1299 times
Been thanked: 1175 times

How to replate

Post by Dave54 »

I had a few bits plated way back.
I think that they reverse the plating process to remove any existing plate, then it's polished to take out any rust pits and prepare it for the plating.
It's then chemically cleaned and degreased, given a flash nickel coat, followed by a coat of chrome plate.
The really good work for custom bikes etc, is "triple plate" copper, then nickel then chrome. (or at least used to be)

It's not a cheap process, because of the labour involved.

As Bob suggests it's best to ask a platers.

Nickel alone isn't all that hard wearing, which is why they stopped using it alone for vehicle plating around 1930 IIRC.
User avatar
Puma
Senior Member
Posts: 3910
Joined: Fri Mar 05, 2010 8:40 pm
Location: Bristol
Has thanked: 681 times
Been thanked: 704 times

How to replate

Post by Puma »

Thanks people. I think asking a pro platers to do it in the first instance is a good idea and I sent off a few to get an accurate quote this morning. They don't have to look amazing so hopefully it won't be too expensive! Then I might look at powder coating and DiY plating. Cheers.
User avatar
Puma
Senior Member
Posts: 3910
Joined: Fri Mar 05, 2010 8:40 pm
Location: Bristol
Has thanked: 681 times
Been thanked: 704 times

How to replate

Post by Puma »

Just to let you know that I went to a Platers in Bristol. They gave me a price for 85p per large stirrer so I am going for that. They are putting on a good thick coating and getting a good finish. There process is just dissolving the old finish in strong acid and then rinsing off before replating. They have a lot of baths set up for just that process.
These users thanked the author Puma for the post:
Dave54 (Mon Oct 05, 2020 6:24 pm)
Rating: 7.14%
Post Reply

Return to “Metalworking Forum”