Painting Cast With Hardener and No Supplied Air

Tom in Iowa City · Mar 5, 2009

I am well acquainted with the fact that you need to use "supplied air" when spray painting with hardeners. Well, what about painting all of the cast portions of my Farmall A if I want to brush it on, which I do, and if I want to used hardener? How about that? Any dangers there? Which can of what number paint and which hardener system, if this sounds like a go? Tom In Ioway City

rustyfarmall · Mar 5, 2009

The hardener is hazardous. Period. Makes no difference if you are brushing it or spraying it. Besides that, you don't need the hardener.

Red Dave · Mar 5, 2009

The isocyanates in the hardener can cause severe reactions in some people. The more you use them, the more likely you are to become sensitized to them. Many guys use them for years with no ill effects, then one day they have a reaction. No warning. How long that takes varies from person to person. There is no way to predict how soon it will happen. It is like playing Russian Roulette, one of these days it will get you.

Will it happen the first time, the tenth time, or the hundreth time, who knows? It's your life, spend it how you want to.

I would wear a supplied-air respirator if I were you.

Tom in Iowa City · Mar 5, 2009

Since I don't own and don't think it practical to buy such a device, I think I will AVOID HARDENERS LIKE THE PLAGUE. With the prevalence of use of hardeners, having read so many personal accounts by people, I'll bet very few used supplied air when painting their tractors with hardeners. Sounds like a no-no and even though I am 63 years of age, I'll say no thanks. Tom in Ioway City.

rustyfarmall · Mar 5, 2009

I have become over sensitized to those isocyanates , but in something other than paint hardener, and I didn't know I was being exposed to it. Of course the factory where I used to work denies everything.

I have a 1940 H that was painted 10 or so years ago. I used the Case-IH 2150 WITHOUT hardener, and used a brush to apply it to the cast parts. This tractor has a Woods belly mower attached, and receives regular use every summer. It gets dirty, dusty, and sometimes muddy, but wash it all off and the paint still looks absolutely great.

dhermesc · Mar 5, 2009

Give it time and the paint will harden on its own. It might take a summer of high heat before it "bakes" but it eventually will.

ADLM · Mar 5, 2009

What kind of reactions do people have when using the hardener, and why is is useful to have it?

CNKS · Mar 5, 2009

The detrimental effects of brushed on paint with hardener are much less, but they still exist. Anyway, why would you want to use hardener with brushed on paint -- I doubt if you can tell the difference when done.

CNKS · Mar 5, 2009

Enamel, yes, urethane no -- it requires hardener.

Painting Cast With Hardener and No Supplied Air

Tom in Iowa City

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rustyfarmall

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Red Dave

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Tom in Iowa City

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rustyfarmall

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dhermesc

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ADLM

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CNKS

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CNKS

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