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| iPints Member Since: 15 Jun 2012 Location: SC Posts: 294   
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Hello all I am new to this forum......
I have had my defender now for 5 years and last year i stripped back my rear cross member and then painted it with "Kurust" then an red oxide and undercoat and finally two coats of Smoothrite flat matt black.... A year on and the rust is back..  ..any ideas what I should do next?I dont really want to get it replaced as it isn't that bad yet...... |
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15th Jun 2012 10:09am |
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| Zagato Site Supporter Member Since: 08 Jan 2011 Location: Billingshurst West Sussex Posts: 5013 
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Welcome...
Ku-Rust and most similar treatments will only acid treat rust on the very surface, it doesn't penetrate very well, you have to make sure you take the rust right back! I would get it right back to bare metal and do as you did before so the Ku-Rust will act on any surface rust pitting that isn't too deep. No need for red oxide and Ku-Rust though, Smoothrite will go straight over the Ku-Rust, the red oxide isn't doing anything in your case, (never does much anyway!  acid converting treatments will stop it dead, red oxide just slows it down and it will all have to be done again eventually as you found out!).
Could try Fertan next 
http://www.fertan.co.uk/Item-Fertan%20rust%20converter.htm No need to sand/shot blast apparently  |
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15th Jun 2012 11:45am |
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it would probably be a good idea to strip all of the old paint off as well so go right down to the bare 'fresh' steel so there is no paint or rust left anywhere on the whole thing. For longevity maybe a clear coat / lacquer would help as of course and slight chip or knock into the paint to the steel will of course let the rust to get in and it will happen all over again. | iPints Member Since: 15 Jun 2012 Location: SC Posts: 294
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Thank you both for very quick response.
I did bring the whole thing back to bare metal but I think the areas of rusting needed more work.....I will try again when we get some decent weather!! So maybe next year then.....  |
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15th Jun 2012 2:29pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20359
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A grinder to start taking care not to take too much off or not to gouge it into the steel. And some sand fine sand paper to take out the imperfections $W33T $0U7H3RN $UG4R
🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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15th Jun 2012 3:00pm |
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