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Sanding painted metal

 
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tahir



Joined: 28 Oct 2004
Posts: 43941
Location: Essex
PostPosted: Fri Apr 28, 17 12:54 pm    Post subject: Sanding painted metal  Reply with quote    

I have some metal shelves where the paint has flaked off, I assume sand/prime/paint would be the solution, but:

1. What grit sandpaper should I use?
2. Can I just use this after sanding and no paint on top?

http://www.screwfix.com/p/no-nonsense-zinc-galvanising-spray-paint-silver-400ml/40801

gregotyn



Joined: 24 Jun 2010
Posts: 1421
Location: Llanfyllin area
PostPosted: Fri Apr 28, 17 1:42 pm    Post subject: Reply with quote    

We use the spray-on galvanise at work and it is good stuff, comes from Sparex in Exeter, not sure if they deal with the public, but worth a try; or come back to me and I will find out on Tuesday how much ours costs.

tahir



Joined: 28 Oct 2004
Posts: 43941
Location: Essex
PostPosted: Fri Apr 28, 17 1:53 pm    Post subject: Reply with quote    

I'm going to pick it up on the way home from screwfix, if I don't get it done tomorrow I'll probably never do it. What grit sandpaper do you reckon?

dpack



Joined: 02 Jul 2005
Posts: 32958
Location: yes
PostPosted: Fri Apr 28, 17 1:58 pm    Post subject: Reply with quote    

40 gt then 180 gt then 1200 gt > primer+ top coats
or
strip with naoh + wallpaper paste> 1200 gt > fancy galvanising stuff
or
wire brush >smoothrite

it depends if you need them to look good or just not go rusty in the shed and if look good what finish you want ( they get easier descending the list)

other options exist, what are they for ?

tahir



Joined: 28 Oct 2004
Posts: 43941
Location: Essex
PostPosted: Fri Apr 28, 17 2:00 pm    Post subject: Reply with quote    

They're going to be random junk shelves in the barn

dpack



Joined: 02 Jul 2005
Posts: 32958
Location: yes
PostPosted: Fri Apr 28, 17 2:27 pm    Post subject: Reply with quote    

wire brush + smoothrite , let them dry for a couple of weeks to make sure nowt sticks.

or

wire brush and any oil based paint you might have .dry well as above

i have put stuff with rubber feet on paint that had dried as long as it said on the tin and regretted it

tahir



Joined: 28 Oct 2004
Posts: 43941
Location: Essex
PostPosted: Fri Apr 28, 17 2:34 pm    Post subject: Reply with quote    

Thanks, will do that. Wipe off rust dust with damp cloth?

Nick



Joined: 02 Nov 2004
Posts: 33683
Location: Hereford
PostPosted: Fri Apr 28, 17 3:53 pm    Post subject: Reply with quote    

Yes. But make sure you finish the job otherwise live got bare metal with fresh moisture on it.

Guess what happens next?

tahir



Joined: 28 Oct 2004
Posts: 43941
Location: Essex
PostPosted: Fri Apr 28, 17 4:00 pm    Post subject: Reply with quote    

Nick wrote:
Guess what happens next?


1. Gets infected with yeast and turns into cider vinegar?

OR (more plausibly)

2. Wife beats me with re-rusted shelves before making me drink the paint?

dpack



Joined: 02 Jul 2005
Posts: 32958
Location: yes
PostPosted: Fri Apr 28, 17 6:33 pm    Post subject: Reply with quote    

2

gregotyn



Joined: 24 Jun 2010
Posts: 1421
Location: Llanfyllin area
PostPosted: Sat Apr 29, 17 9:29 am    Post subject: Reply with quote    

Replace the shelves with wood, it won't hurt so much, and could also give rise to the yeast and a pint.

tahir



Joined: 28 Oct 2004
Posts: 43941
Location: Essex
PostPosted: Sat Apr 29, 17 3:04 pm    Post subject: Reply with quote    

Shelves painted and two cattle troughs turned into benches

sean
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 41705
Location: North Devon
PostPosted: Sat Apr 29, 17 3:21 pm    Post subject: Reply with quote    

Get you with your upcycled furniture.

Nick



Joined: 02 Nov 2004
Posts: 33683
Location: Hereford
PostPosted: Sat Apr 29, 17 5:38 pm    Post subject: Reply with quote    

He's like KEVIN McCloud, but more Essexer.

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