Rust-killer liquid -- anyone remember this stuff??

RalphVa · Dec 13, 2005

Been using the stuff for years. It reacts the iron oxide to iron sulfide, which is black. First stuff out was something called Trustan. Then some other product came out. Can buy Rustoleum's Rust Reformer now. Buy mine at Lowes.

Also bought a similar product at NAPA.

Did my snow plow where the paint had been rubbed off. Never did noticeably rust. Never bothered to paint it.

Ralph

daTeacha · Dec 13, 2005

I had a guy rebuild my rusted out mower deck for my Cadet with deck plating. Then I painted the entire underside with POR15. I've got 3 years of mowing on it, and the stuff is still black and tough. If you use it, don't clean down to the shiny steel. It reacts with the iron oxide to do it's thing.

Jay4200 · Dec 13, 2005

Thanks guys! Nice to know there are plenty of options to choose from. I figure I'll be needing a couple of gallons for this pig! /forums/images/graemlins/wink.gif.

Jay

CT_Tree_Guy · Dec 13, 2005

"I figure I'll be needing a couple of gallons for this pig!" 

Jay, that's no pig, it's a Kubota! /forums/images/graemlins/shocked.gif /forums/images/graemlins/smile.gif

Just wanted to throw my 3 cents worth in. (Inflation you know).

Regarding: Another company is POR 15. Supposed to convert / seal rust to be able to paint. 

Just wanted to expand on that a little. POR 15 (800-457-6715) typically involves a multi-step process for dealing with rusty stuff, and one of the steps involves their version of a rust neutralizer, I'm just not sure if it's ideal for use with topcoats other than POR 15. Maybe one of the other products mentioned in this thread would be better for use under whatever primer you're going to put under your "Kubota Orange".

I use POR 15 mostly for things that aren't going to be painted, but rather coated with POR 15 Rust Preventive Coating (which is what I think of when someone says "POR 15". Only if the surface is going to be exposed to UV (sunlight) do they recommend the last step: topcoating the Rust Preventive Coating with Chassiscoat Black (semi-gloss) or Blackcoat (gloss) which are impervious to UV. They do say that you can topcoat the Rust Preventive Coating with "enamel and other regular paints" but advise that they won't be as chip-resistant as the POR topcoats.

Just to sum up - the steps POR recommends:

<ul type="square"> Degrease and clean surface with their Marine Clean degreaser/cleaner. (I might add: scrape off or wire-brush loose rust first. As others have said, it's unnecessary and might even be detrimental to get the metal shiny clean).

Neutralize rust/etch metal with their Metal-Ready rust remover, which leaves a coating of zinc phosphate to help bond POR 15 to the base metal and rust.

Apply POR 15 Rust Preventive Coating (man it is tough, like ceramic).

Topcoat the surface if necessary to protect the Rust Preventive Coating from UV. [/list]

POR 15 also makes GREAT high-temp coatings for manifolds, and an amazingly tough clear finish called Pelucid that is GREAT over wheels that have been sandblasted and painted, and anything else you can think of. After blasting wheels, I prime them and paint them with a flat finish, then put Pelucid over the paint, just as in a base coat/clearcoat car finish. Looks NICE, and it lasts a LONG time.

kybota · Dec 13, 2005

Thanks for asking this question. TBN ratchets down my ignorance level again!

I never knew about this stuff and I have several things that could use it pronto if only we could get anything resembling a warm spell (above 45 degrees for 24 hours per instructions). It'll probably be Spring before we see a night like that again while my stuff rusts away the winter.

gotrocks · Dec 14, 2005

Anyone else remember something called "Naval Jelly". No it was not for you belly button, /forums/images/graemlins/grin.gif it removed rust.

MERRY CHRISTMAS

RonR · Dec 14, 2005

I've used naval jelly years ago. I think this stuff that chemically converts the rust to Iron something works better.

Ron

KentT · Dec 14, 2005

Naval Jelly is still available from Locktite... as is Extend, as previously mentioned:

Locktite Product Examples

CT_Tree_Guy · Dec 14, 2005

I love Naval jelly, goes great with Naval toast. /forums/images/graemlins/smile.gif /forums/images/graemlins/smile.gif /forums/images/graemlins/tongue.gif

I've used it on a few things in the past, but it's never been one of my "go-to" products. As a PP said, it seems to be more for dissolving rust than for prepping rusty surfaces for painting. Here's a link to a good Q & A page from Loctite who make Naval Jelly and Extend, which has also been mentioned in this thread, and is what Loctite recommends for prepping rusty metal.

This page also talks about thread locker and Super Glue.

MMM · Dec 14, 2005

( I'll be needing a couple of gallons )

A little goes a long way, if it is the phoshoric acid derivative. I use maybe a pint on tractor twice the size of youe "pig". Using a paint brush for application to bare/rusty areas and spraying (409 bottle) only inaccessible areas saves a lot. I find with spraying, most of the product drips to ground.