Fight agressive rust

F

Florida

Seaman
Joined
May 21, 2007
Messages
63
The new lawn mower is rusting so fast it will be junk before its paid for. What can I do to keep bolts from rusting shut? What can I do to keep the underside of the deck from rusting? I tried sanding, priming and painting but the rust just bleeds through the paint. The bolts are rusting and I keep twisting the heads off. Its a toro LX500

Thanks
 
M

MrBigStuff

Chief Petty Officer
Joined
Aug 7, 2004
Messages
497
Re: Fight agressive rust

Well, you could clean and paint the underside of the deck with a product like POR-15 http://www.por15.com/. I have restored many old cars using this product and it's tough as nails if you follow the instructions. The nice part is you can paint right over any rust once you remove the loose stuff.

Replace any fasteners that are prone to rust wasting and break-off with stainless hardware.
 
B

BoatBuoy

Rear Admiral
Joined
May 29, 2004
Messages
4,856
Re: Fight agressive rust

Remove the rust that you can and auto-undercoat it.
 
C

Coors

Captain
Joined
Dec 8, 2006
Messages
3,367
Re: Fight agressive rust

Phosphoric acid will kill it, and leave a coating.
 
K

kmk_7110

Petty Officer 1st Class
Joined
May 10, 2007
Messages
259
Re: Fight agressive rust

Krylon makes a spray paint that kills the rust and leaves an auto primer over it. Find out about it Here
 
N

ndemge

Commander
Joined
Jul 15, 2002
Messages
2,644
Re: Fight agressive rust

Nice thread :) I need to treat the underside of the car I just bought from someone in the salt belt.
 
Boomyal

Boomyal

Supreme Mariner
Joined
Aug 16, 2003
Messages
12,072
Re: Fight agressive rust

Coors said:
Phosphoric acid will kill it, and leave a coating.
Click to expand...

I agree with Coors. The stuff is commonly referred to as a rust converter. knock off any loose stuff and blistering paint, apply the rust converter, 24 hrs later rinse off any excess, let dry then paint.

The stuff is available at automotive paint stores. It is handy to have around.
 
C

Coors

Captain
Joined
Dec 8, 2006
Messages
3,367
Re: Fight agressive rust

Ace Hardware has it too. It is also used to clean the alum. fins on your a/c unit.
 
S

Solittle

Fleet Admiral
Joined
Apr 28, 2002
Messages
7,518
Re: Fight agressive rust

Use any of the rust converters (Naval Jelly is one) described above then slobber Penatrol oil all over the area to be treated, let it dry at least 24 hours then top off with a coat of Rust-O-Leum. I been using this method on trailers that get sunk in salt water for 37 years.
 
C

Coors

Captain
Joined
Dec 8, 2006
Messages
3,367
Re: Fight agressive rust

I have old cars/trucks
1946,1949, etc
ospho/ phosporic acid is the king.
 
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