UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > Cabinet and Chassis Restoration and Refinishing

Notices

Cabinet and Chassis Restoration and Refinishing For help with cabinet or chassis restoration (non-electrical), please leave a message here.

Reply
 
Thread Tools
Old 1st Apr 2019, 10:04 am   #21
electronicskip
Heptode
 
electronicskip's Avatar
 
Join Date: Oct 2010
Location: Gloucester, Glos. UK.
Posts: 932
Default Re: Rust removal from steel component on the cheap.

Quote:
Originally Posted by M0FYA Andy View Post
By 'tin foil' I guess you mean aluminium foil?
Yes it was a roll of aluminium foil, he demonstrated it on a metal base of something he was restoring .
electronicskip is offline   Reply With Quote
Old 1st Apr 2019, 11:33 am   #22
M0FYA Andy
Octode
 
Join Date: May 2007
Location: Preston, Lancashire, UK.
Posts: 1,798
Default Re: Rust removal from steel component on the cheap.

Do you think there was some chemical or electrolytic action, or did the foil just behave as an effective mechanical 'scrubbing brush'?

Andy
M0FYA Andy is online now   Reply With Quote
Old 2nd Apr 2019, 5:56 pm   #23
ColinTheAmpMan1
Heptode
 
ColinTheAmpMan1's Avatar
 
Join Date: Jan 2012
Location: Wimbledon, London, UK.
Posts: 858
Default Re: Rust removal from steel component on the cheap.

Quote:
Originally Posted by electronicskip View Post
Was watching American restoration the other night and the guy demonstrated a way to get rid of heavy surface rust by rubbing tin foil over the metal.
I have to say it actually worked the outcome was 1st class and looked like new.
This sounds weird to me. Was there any significance in the fact that this post was made on April 1st? Just asking....

Colin.
ColinTheAmpMan1 is offline   Reply With Quote
Old 3rd Apr 2019, 7:52 am   #24
kernowcam
Pentode
 
Join Date: Dec 2011
Location: Camelford, Cornwall, UK.
Posts: 185
Default Re: Rust removal from steel component on the cheap.

I have used aluminiumfoil scrunched up to remove rust. its pretty nonabrasive. I believe it was for a chrome plated trim panel for a accordian with rust pitting.
kernowcam is offline   Reply With Quote
Old 3rd Apr 2019, 10:54 am   #25
HamishBoxer
Dekatron
 
HamishBoxer's Avatar
 
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 6,513
Default Re: Rust removal from steel component on the cheap.

When I get around to trying it,I have some Hammerite Rust Removal Gel here.
__________________
G8JET BVWS Member and V.M.A.R.S
HamishBoxer is online now   Reply With Quote
Old 3rd Apr 2019, 9:01 pm   #26
Bazz4CQJ
Nonode
 
Bazz4CQJ's Avatar
 
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 2,325
Default Re: Rust removal from steel component on the cheap.

Perhaps we should look at this from another angle. Rubbing down a rusty surface with aluminium foil will give you nice mixture of particles of rust and particles of aluminium and I suspect that some of you will now think of the term "Thermite". For those who don't know, Thermite is an extremely powerful pyrophoric mixture, consisting of powdered iron oxide and powdered aluminium which used with skill, can be used to either cut or weld large sections of steel, see https://www.youtube.com/watch?v=RXQnIgrXJd8.

Anyone trying this "rust removal technique" had best make sure there are no sources of ignition anywhere near! As iron oxide is so hard that it is used as an abrasive, and aluminium foil is more "soft as putty" ranking, this does not sound like a good rust removal strategy to me. Why not just use steel wool or stainless steel wool?

There's no 'magic electrolytic action' because there's no electrolyte!

B
__________________
We know there are known unknowns. But there are unknown unknowns ones we don't know we don't know.
Bazz4CQJ is online now   Reply With Quote
Old 3rd Apr 2019, 11:40 pm   #27
m0cemdave
Heptode
 
Join Date: Feb 2009
Location: Bletchley, Buckinghamshire, UK.
Posts: 674
Default Re: Rust removal from steel component on the cheap.

I'm sure Thermite is very hard to ignite. When we made it at school (yes, such things were allowed in those days) we had to use a piece of burning Magnesium strip to start it off.
m0cemdave is offline   Reply With Quote
Old 4th Apr 2019, 12:03 am   #28
Bazz4CQJ
Nonode
 
Bazz4CQJ's Avatar
 
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 2,325
Default Re: Rust removal from steel component on the cheap.

Maybe so. I don't recall getting to 'play' with Thermite at school . However, we did some interesting stuff with sodium chlorate weedkiller
in the days before it had inhibitor added to it, and a death or two was only narrowly avoided

B
__________________
We know there are known unknowns. But there are unknown unknowns ones we don't know we don't know.

Last edited by Bazz4CQJ; 4th Apr 2019 at 12:09 am.
Bazz4CQJ is online now   Reply With Quote
Old 4th Apr 2019, 11:54 am   #29
ColinTheAmpMan1
Heptode
 
ColinTheAmpMan1's Avatar
 
Join Date: Jan 2012
Location: Wimbledon, London, UK.
Posts: 858
Default Re: Rust removal from steel component on the cheap.

Quote:
Originally Posted by Bazz4CQJ View Post
Perhaps we should look at this from another angle. Rubbing down a rusty surface with aluminium foil will give you nice mixture of particles of rust and particles of aluminium and I suspect that some of you will now think of the term "Thermite". For those who don't know, Thermite is an extremely powerful pyrophoric mixture, consisting of powdered iron oxide and powdered aluminium which used with skill, can be used to either cut or weld large sections of steel, see https://www.youtube.com/watch?v=RXQnIgrXJd8.

Anyone trying this "rust removal technique" had best make sure there are no sources of ignition anywhere near! As iron oxide is so hard that it is used as an abrasive, and aluminium foil is more "soft as putty" ranking, this does not sound like a good rust removal strategy to me. Why not just use steel wool or stainless steel wool?

There's no 'magic electrolytic action' because there's no electrolyte!

B
I agree with a lot of this, but I feel I should repeat my statement that rust isn't just iron oxide, it is ferroso-ferric oxide and probably contains some other iron compounds such as hydroxides and carbonates. I think it might make a pretty poor Thermite mixture. The Royal Society of Chemistry web-site says that iron(III) oxide (ferric oxide) should be used. I should add that while I have made Thermite and ignited it in the same manner as m0cemdave stated, I have no direct experience of making Thermite by rubbing rusty metal with aluminium foil. I might be talking nonsense.

Colin.
ColinTheAmpMan1 is offline   Reply With Quote
Old 13th May 2019, 1:47 pm   #30
BulgingCap
Tetrode
 
Join Date: Apr 2017
Location: Perth, Western Australia, Australia
Posts: 67
Default Re: Rust removal from steel component on the cheap.

I agree with Kalee: Oxalic acid, sold here as a concrete and patio cleaner in a granular form, is very cheap and superb. It needs no heating and the steel item can be left in the solution indefinitely without ill effect.
I keep the solution in old 2L plastic milk bottles, and pour it into whatever plastic container best suits the shape of the item to be cleaned. It can be reused many times until it loses its potency.
The rust disappears completely leaving a matt grey surface.
It hurts like heck in a cut !!
BC
BulgingCap is offline   Reply With Quote
Old 13th May 2019, 1:56 pm   #31
BulgingCap
Tetrode
 
Join Date: Apr 2017
Location: Perth, Western Australia, Australia
Posts: 67
Default Re: Rust removal from steel component on the cheap.

The local old boys recommend molasses for rust removal. It is readily available because sugar cane is grown in Oz. It seems to be a bit fierce and will eat away the steel if left too long. I have just searched out a story of a chap who dug a big hole, lined it with black plastic, and put a 1913 Cadillac car chassis and springs etc into a molasses solution. The narrator recalls that his elderly friend forgot about it for a while, and when he checked again the chassis had gone !
BC
BulgingCap is offline   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 1:35 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright ©2002 - 2019, Paul Stenning.