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Naycrx



Member Since: 11 Oct 2023
Location: Nottinghamshire
Posts: 129
 
Rust converter
Good Afternoon

Is it it possible to make your own rust converter? For example like kurust? Heard it being done for a fraction of the cost diluted with water
Post #1048738 15th Oct 2024 1:03pm
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BrickBox



Member Since: 05 Oct 2021
Location: Wales
Posts: 809
Wales 2008 Defender 110 Puma 2.4 USW Zermatt Silver
It’s not worth the hassle. Just buy some ACF-50 and it’ll kill most of your rust issues. 2008 2.4 110 Utility Station Wagon XS.
Post #1048746 15th Oct 2024 2:10pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17364
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Use dilute phosphoric acid (25% w/w) which is widely available and inexpensive and will turn your ferric oxide into ferric phosphate.
Post #1048752 15th Oct 2024 3:11pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3414
Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
For smaller / manageable parts, I remove the bulk of the rust using electrolysis - google is your friend to find how it works. After electrolysis, I then use a rust remover (not converter). For rust removal I use a product manufactured by Hg - https://hg.eu/uk/products/hg-rust-remover
Its not expensive, and I only brush it on, and a small 500ml bottle goes a long way.

On my restoration thread there are 2 pics after I applied it to my chassis. But was only surface rust it had to deal with. Nevertheless always pleasant to see clean metal.
https://www.defender2.net/forum/topic72365-135.html 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1048807 16th Oct 2024 12:56am
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AMBxx



Member Since: 24 Jul 2016
Location: York
Posts: 1031
United Kingdom 2015 Defender 110 Puma 2.2 XS CSW Orkney Grey
How well does electrolysis work? I suppose that in theory we could connect our Defender chassis to a trickle charger of some sort and spray part of the chassis with an electrolyte.
Just make sure it's plugged in the right way round!
Post #1048832 16th Oct 2024 9:21am
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3414
Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
With that method, you would need your cathode only a film thickness away from the chassis.

I think Ed's China method of dipping the chassis is much better, the difference is that the electrolyte would literally cost pennies.  1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1048862 16th Oct 2024 12:53pm
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AMBxx



Member Since: 24 Jul 2016
Location: York
Posts: 1031
United Kingdom 2015 Defender 110 Puma 2.2 XS CSW Orkney Grey
I 'just' need to spend £20k on Evaporust!
Post #1048866 16th Oct 2024 1:40pm
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