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Antique Tractor Paint and Bodywork

Silly paint question?

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Dave F.

05-11-2007 11:22:01




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I have an 1958 cub lo-boy which has be restored about 3 years ago it's a show & prade tractor (trailer queen) It was painted with PPG paint with the hardner, I am starting to notice some small paint chipping on certain parts & edges of parts, could the paint just be to hard? I am real novice when it comes to painting, I am planning to restore an 55 cub, I though about paining it with straight acrilylic(sp) enamel or an ureathane. which would be a more fexible paint. Or am I way off base here on paint. Thanks Dave F.

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CNKS

05-11-2007 17:39:49




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 Re: Silly paint question? in reply to Dave F., 05-11-2007 11:22:01  
What line of PPG, there is more than one. Did you follow the instructions exactly on the instruction sheet? All paint will chip, particularly on the edges where it is thinner. A prime example of this is the edges on car doors.



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B-maniac

05-12-2007 06:38:46




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 Re: Silly paint question? in reply to CNKS, 05-11-2007 17:39:49  
Chips are caused , they don't just happen from faulty or too hard of paint. Lack of adhesion (many causes) , too much mil thickness will make it chip easier when hit , but like CNKS said , all coatings will chip if hit hard enough. Also if you use a "system" that uses chemical bonding as apposed to mechanical bonding , it drastically reduces incidental chipping. In other words , whenever you are depending on minute sand scratches for your adhesion as apposed to chemical crosslinking "non-sanding chemistry" you will get easier chipping.

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aaron novak

05-11-2007 14:26:38




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 Re: Silly paint question? in reply to Dave F., 05-11-2007 11:22:01  
Urethanes have their place and use. Honestly the UV resistance is very similiar between AE and Urethane. Flexibility is another issue, to say urethanes are more flexible is a broad and incorrect statement since it varies so much. Either AE or urethane have the same corrosion resistance using the "scratch" test. WHat will really help you is using a chromate type epoxy primer under the topcoat. Either AE with hardener or Urethane will do you fine.

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circus

05-11-2007 11:39:01




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 Re: Silly paint question? in reply to Dave F., 05-11-2007 11:22:01  
Modern urethanes are far more flexible, chip and fade resistant than acrylic's and alkyds. This is good except when scratched the rust festers under the paint.



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