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Antique Tractor Paint and Bodywork

Paint hardener

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Artthur Wolch

07-29-2007 04:03:40




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I am painting a 1962 airforce tug and I am using TISCO enamel paint. Do you recommend a hardener? What brand? How much do I add for a quart of paint and should this be mixed on a mixer or how do I mix it in the paint.

Thanks in advance guys! Good Forum to read...
Art




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IH RED

08-09-2007 22:27:51




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 Re: Paint hardener in reply to Artthur Wolch, 07-29-2007 04:03:40  
if u add hardener use the same brand of hardener as paint if u don't they might have a chemical reaction and the out come of ur paint will not be good it will flake and lift off and peel..differnt manufacutres of paint have diff. ratios.. the paint i use is 4:2:1 4 parts paint to 2 parts reducer to 1 part hardener...hardener is not nessiceryt but it will give ur paint a better shine if u need any more info i will be happy to help...i do a lot of automotive work and airbrushing....when i laydown my primer i use the same brand for primer paint and in most cases clear coat..

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PhilC

07-29-2007 14:10:40




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 Re: Paint hardener in reply to Artthur Wolch, 07-29-2007 04:03:40  
I need to get smart on the various tractor paints so I can offer educated "opinions".third party image I am familiar with automotive paints, and don't know how much of that transfers to tractor paints.

Rod (NH) makes a good point about catalysts and the use of air suplied respirators. I'm not going to contradict him, because I agree with his advice for those who don't know the chemical composition of the product they are working with.

Having said that, as long as your catalyst is free of di-isocynates, a properly fitted cartridge mask with fresh filters will be more than adequate.

Notice the emphasis on "properly" and "fresh". Properly means someone has fitted you to ensure the mask will perform as intended, not that you just grabbed a mask off the shelf at the local TSC or Home Depot and strapped it on. When I say fresh, it means the catridges are still in their package prior to you using the mask, and they are only removed to install on the mask and then spray. Once spraying is completed, you either remove the cartridges and store them in an airtight container, or store the entire mask in one. I never let more than two weeks go by on a set of cartridges when spraying 2k coatings and always store them in an airtight container.

If one isn't willing to do this, then by all means, they should be using a fresh air supplied respirator. Your health is far more important than a tractor.third party image

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CNKS

07-29-2007 17:25:12




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 Re: Paint hardener in reply to PhilC, 07-29-2007 14:10:40  
So called "tractor" paints are usually alkyd enamels, discarded by the automotive industry years ago. I use single stage acrylic urethane for the most part. A somewhat "new" development is acrylic modified alkyd enamel, basically the old alkyd enamel with some acrylic properties, notably UV resistance, but it is still basically the old alkyd enamel. Some of the hardeners for the "tractor paints" may have less iso's in them, I don't know, the wording on the label is certainly not very clear. But, all users should use supplied air with ANY iso containing material. There are NO cartridge masks for Iso's. The reason you and other professional painters get by with them is that you have a good paint booth that "may" get the iso concentration down to the accepted limits. Hobbiests do not have the proper air monitering equipment and thus have no clue what they are breathing. Rod(NH) has had a severe response to iso's and I have had a lesser one, which is the reason we say not to use iso's without supplied air. Two weeks is a LONG time to use cartridges if you use them every day. Sort of like me using them for 2 months for occasional painting -- perhaps still ok for normal paint fumes but not iso's. Other than the catalysts used with epoxy primer, I don't believe there are any iso-free hardeners, if there are I don't think they are in general use -- as a professional you may be aware of them. I have mostly given up talking about hardeners, there is an immense amount of info in the archives of this forum, along with a LOT of data on the internet that can be accessed simply by typing in Isocyanates in some search engine, if the readers of this forum would simply do it. There are far too many people giving painting advice that simply say "put a little hardener in it". They do not realize what they are saying.

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Rod (NH)

07-29-2007 11:39:45




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 Re: Paint hardener in reply to Artthur Wolch, 07-29-2007 04:03:40  
Hi Art,

Hardeners are always preferable to add in order to improve the performance of the paint - provided the mixture can be used safely. By safely, I mean using a fresh air type of respirator. Lacking such a respirator, I would not recommend the use of hardeners for your own good respiratory health. Others will disagree and that's their choice, but such a personal decision is yours and yours alone.

third party image Rod

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