[TowerTalk] how much rust is too much?

[Gary Smith]

It might be splitting hairs, I'm not trying to, but I'm adverse about 
anything that uses acid to etch rust off and then has at the metal 
underneath. I'm guessing the "pho" in Ospho is regarding phosphoric 
acid and if someone wants to remove just the rust and no metal, that 
EvapoRust takes a couple days on something with heavy rust. 

http://www.evapo-rust.com/

Since you have to leave the rust immersed, that's why I suggested 
wrapping the area in rags, soak them and then cellophane wrap them to 
keep it the tower legs wet.

Just an idea.

Gary
KA1J

> Hi Steve
> 
> The stuff is called .Ospho.'
> 
> I worked on the river here for Weyerheauser for 32 years and we used to 
> use this stuff for removing rust.  After the rust is gone, it coats it 
> with a covering you can paint.  Really good stuff.  73
> Tom W7WHY
> 
> 
> 
> 
> On 10/14/2014 8:37 AM, K7LXC--- via TowerTalk wrote:
> 
> There's a compound available from hardware stores that you cover the 
> rust with and that'll encapsulate the rust. I'd follow your plan for 
> removing the rust.
> 
> After it's off, then you can coat it with something. W3LPL recommends 
> painting everything that comes in contact with soil with a home repair 
> type tar; e.g. roofing tar. That'll take care of it for the foreseeable 
> future. If you're concerned about the bottom of the tower leg strength, 
> just reinforce them with angle iron or aluminum and hose clamps or 
> similar splinting arrangement. This might be more psychological but like 
> belt-and-suspenders - it couldn't hurt. Cheers & GL, Steve K7LXC TOWER TECH
> _______________________________________________
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> 
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