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RE Painting IHC Farmall BN

1

1946 BN IHC

Member
Just repainted the grill and hood / sanded then primed and did some other work to the two pieces, so primed then finished paint with 3 parts of hardner. Once I assembled the grill and hood the tank //that had been painted about 7 years ago ??so it looked slightly less the same colour sheen /tint. My thought is that it was done 7 years ago.
>>>SO now I have sanded with 600 grit and then 250 grit. wet both.
???Question to those who are better painters than I ??? since the paint is the same type and mix as the original ; would it be prudent to re prime the sanded paint? This paint I will mix 1/2 cup paint, 1 1/4 cup or 1/8 th cup reducer and 3/8 cup of hardner [ slow curing hardner].
This will be the approximate formula since I am only doing the fuel tank with at least 2 coats.
Thank you for the advice.
Wm.
 
I would sand the old painted parts thoroughly with sandpaper 320 wet. That means sand in every crack and crevice because you want to get that old finish to have teeth for the new paint. If you're going to use an alkyd enamel you're probably good to go. If you're using some other kind of paint system, refer to the directions for that product.
 
The only time you need to prime metal is if raw metal is showing. Paint over paint all you have to do is scuff sand the existing paint with fine paper. As far as the color difference if you used a different ratio now than 7 years ago that could make a slight difference in the color.
 
The interesting thing is that the paint used now was from the remaining paint from the first painting 7 years ago. So taking from what you just wrote the shade slight change must have been in the mix but the sun must have bleached the paint that was on, over the years, so when I repainted just in the last month the colour restored to what the original mix was. If that is possible.
Thank you Wm.
 
(quoted from post at 01:56:05 06/13/23) The interesting thing is that the paint used now was from the remaining paint from the first painting 7 years ago. So taking from what you just wrote the shade slight change must have been in the mix but the sun must have bleached the paint that was on, over the years, so when I repainted just in the last month the colour restored to what the original mix was. If that is possible.
Thank you Wm.
Click to expand...


Yes, you have it. The brighter the color the faster it will fade.
 


I have had new paint attack and partially dissolve older paint that I have put it on. Some of the solvents/reducers are very hot. I would mix a tiny amount and test in a hidden spot. I prefer to sand and prime it all rather than take a chance.
 
up date on faded paint.
When I took the fuel tank off the parts that were not exposed to the sun were the same shade and colour as the newly repainted grill, hood and other parts. The paint codes were gained from Van Cycle paints form the U.S.A, and the paint was mixed here in Ontario Canada by Car Quest.
So the moral of the story is even Cream White Cream [ the old old IHC demonstrator colour.] fades in the sunlight.
(One thought is that maybe the paint installed 7 years ago didn't have enough Hardener in it [ just a guess] it was done in a commercial paint shop where they sandblasted primed and painted it.)
As I painted this time I used 3 parts of Slow hardener rather than 1 part; 2 parts reducer,4 parts paint.
Any way Will try to post a picture in the next few days.
Wm.
 
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