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Rust

Posted: Tue Dec 13, 2011 8:33 am
by Gary406
on the car i just bought its rusty round the aerial quite bad.... what stuff can i dab on there to help slow it down.... i've seen KURUST says it turns rust to normal oxide in 15 minutes ... if i use then but a bit of primer and paint over that it might help to stop the water getting at the rust under it...

so has any1 used KURUST or any other stuff that i could use to stop rust in its tracks ...

Re: Rust

Posted: Tue Dec 13, 2011 10:07 am
by benczuk
I use KURUST whenever i'm patching some paint. Cant vouch for how effective it is compared to not using it as i have never done a comparison. seems to work nicely.

Re: Rust

Posted: Tue Dec 13, 2011 11:31 am
by Gary406
will get sum today and treat it. its not to bad after another look... its not got to windscreen yet so should be ok if i slow it down with KURUST

Re: Rust

Posted: Tue Dec 13, 2011 3:03 pm
by lozz
angle grinder :supafrisk:



only joking, :mrgreen: imeant Dremel

Re: Rust

Posted: Tue Dec 13, 2011 4:07 pm
by Gary406
see how it goes over this winter . but if it looks like its spreading fast i will

1. remove aerial
2. grind a square out around the rusted area
3. get my brother in law to weld a square plate back on smooth it off and touch it up with paint
4. drill and replace aerial..

shouldnt be to hard of a job really once done should be ok .

just dont want it spreading towards the windscreen thats all.

Re: Rust

Posted: Tue Dec 13, 2011 4:14 pm
by lozz
No need to weld it mate 8)
if it was welded roof lining wouid have to come out :(

Best substitute for welding is Jb weld sets like steel and wont rust again,
can be easily sanded too,

Re: Rust

Posted: Tue Dec 13, 2011 4:49 pm
by Gary406
ok lozz will bear that in mind . if it soreads fast i will defo be cutting it out before it gets closer to windscreen ...

Re: Rust

Posted: Sun Dec 18, 2011 9:08 am
by Bailes1992
Is the red on your car laqured?
If it isn't then painting it should be easy as long as you got a good match as if it's faded a little polish will bring it back up.
Otherwise it's inevetable you will have a patch on the roof the total wrong colour.

Did abit of rust patching up in the same spot on my 406. Grinded away all the surface rust until I had decent metal, where it was too bad gone I cut it out with a dremel and patched it up a little bit at a time with fiberglass, skimmed it with filler and sanded back. Then primered and give it to a bodyshop to blow it in. Couldn't notice after that and never game back :)

Re: Rust

Posted: Sun Dec 18, 2011 7:57 pm
by Gary406
sam do you know how2 remove aerial ??

think im gonna do what you did. sand down the rust untill i get good metal and fill and smooth it with filler. then paint over it ...

i will get all materials week after this week (get xmas out the way) and then hope for a dry day.

1st job will be removing aerial cos water is slightly leaking past it now ...

Re: Rust

Posted: Sun Dec 18, 2011 8:04 pm
by Gary406
if i sand all the rust away then fill on top will that stop it from spreading ?

once aerial is re-fitted i will use a small bead if tigerseal around it to stop water going under it

Re: Rust

Posted: Mon Dec 19, 2011 6:57 am
by lozz
Best thing to do is Apply Krust, leave that on a few days,
then sand /grind off any rust, until you get ashiny metal apearing & level off with filler or whatever you chose to use,
then 2 or 3 coats of primer,

if its only a small area, Iwouidnt use Body filler or fiber glass its a waste of space and makes more work,
body filler/ fibre glass is only anygood for filling big dents imho,

if you have to sand/grind alot of rust out the area, jb weld or any liquid metal is best bet to level off and your car remains 99%metal - and its cheaper than Body filler or fibre glass,

is the paint on your car Metalic? if so iwouidnt try spraying in this cold weather , you need a warm area for Met paints,

Re: Rust

Posted: Mon Dec 19, 2011 7:35 am
by Gary406
i'll try get a pic today. it looks worse than it actually is
car is not metalic i dont think ..

so can that jb weld stuff be used to smooth over ?

Re: Rust

Posted: Mon Dec 19, 2011 7:42 am
by lozz
Hi mate,
yeah you can smooth down Jb weld, it sands easily enough, its alot less sanding than filler,

Re: Rust

Posted: Mon Dec 19, 2011 7:55 am
by Gary406
ok cheers mate. will order some of that

whats the best sand paper to use then ?

Re: Rust

Posted: Mon Dec 19, 2011 8:06 am
by lozz
just get a couple of wet and dry medium
and one course if its a small area,

you can level off jb weld with a dab of water, so theres not much leveling off involved if you take your time with it,