I need to respray the roof on my car.
It is currently in acrylic.
1 guy wants to use 2 pac on the roof and blend it
down the rear pillars and on to the rear quarters.
Another guy says that won't work and should be acrylic on
acrylic.
Does anyone have any experience in part resprays ?
me confused
Blending Paint
Started by
goxu1
, Feb 07 2006 05:22 PM
5 replies to this topic
#1
goxu1
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Posted 07 February 2006 - 05:22 PM
#2
_Yella SLuR_
_Yella SLuR_
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Posted 07 February 2006 - 05:57 PM
Mmm, you need Pete. Think you can go 2 pack over acrylic, but not vice versa, i.e. can't do acrylic over 2 pack or it fries it.
Pete!!!
Pete!!!
#3
_gm3300_
_gm3300_
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Posted 07 February 2006 - 06:01 PM
when i did my painting course years ago i was told
not to put 2K paint over acrylic, whereas these days
the base coats are applied in a similar way to the
old acrylic (paint and reducer) and a 2 pack
clear is sprayed over the top to set the lot.
The paint supplier i use here at work has a paint
that can be either 2 pack or acrylic depending
on the binder they add to it. It's called Dupont
Lucite 400, to quote the can:
grant
not to put 2K paint over acrylic, whereas these days
the base coats are applied in a similar way to the
old acrylic (paint and reducer) and a 2 pack
clear is sprayed over the top to set the lot.
The paint supplier i use here at work has a paint
that can be either 2 pack or acrylic depending
on the binder they add to it. It's called Dupont
Lucite 400, to quote the can:
Contact Kenneys Automotive Paints at Carramar on 97272687 for more info,LUCITE 400 was developed for spot and panel repairs
as well as overall repairs of originally refinished lacquers or baked enamels.
LUCITE 400 can be applied on all old finishes, cleaned and sanded
grant
#4
_1QUICK LJ_
_1QUICK LJ_
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Posted 07 February 2006 - 07:37 PM
really be best to stay with acrylic it is thermoplastic paint so it never fully cures wich means if you clean it properly and give it a light sand with 1000grit the new paint will soften the old paint underneath and the two will bond together as the thinners wets up the old surface. if you put thinners onto an acrylic paintjob it will melt the paint back to liquid form thats why it bonds so well when you spot it up.
#5
_Pete_
_Pete_
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Posted 07 February 2006 - 10:45 PM
Frying up shouldnt really be an issue with either paint type, Its Air Dry enamel or the cheap stuff you get in a "export/supercheap $2" aerosol that will cause frying with acrylic over the top.
Both painters have their points both of which are valid. Heres my opinion for what its worth.
Blending 2K in acrylic can be done but i think the future result will be what will disappoint you, it will probably look fine for a year or so but eventually i think you'll find a visible edge where the 2K has been "wet-out" into the acrylic on the quarters. 2K finish over an acrylic base will always tend to have issues with sink back as like mention acrylic is always "drying" where as 2K is generally fully cured within 76 hours. Baking a 2 pack finish thats been applied over an exisiting acrylic paint surface will also compound the problem. (2K doesnt always have to be baked contrary to popular beleif)
I'd be inclined to go with the Acrylic Job if your happy that the painter can deliver the results your after, the finish should match the existing finish perfectly and there shouldnt be any dramas with the wet-out showing in the future, if you are worried that the blended area will show you could always have the quarter panels cleared at the same time so the finish is consistent in the most visible parts. Its easier to lose a wet-out in a Dog-leg panel or on a seam etc than right in the middle of the quarter panel pillar.
Most painters prefer 2K because once its sprayed the job is finished for them but Acrylic as you'd know requires more effort during and after the paint is applied.
Both painters have their points both of which are valid. Heres my opinion for what its worth.
Blending 2K in acrylic can be done but i think the future result will be what will disappoint you, it will probably look fine for a year or so but eventually i think you'll find a visible edge where the 2K has been "wet-out" into the acrylic on the quarters. 2K finish over an acrylic base will always tend to have issues with sink back as like mention acrylic is always "drying" where as 2K is generally fully cured within 76 hours. Baking a 2 pack finish thats been applied over an exisiting acrylic paint surface will also compound the problem. (2K doesnt always have to be baked contrary to popular beleif)
I'd be inclined to go with the Acrylic Job if your happy that the painter can deliver the results your after, the finish should match the existing finish perfectly and there shouldnt be any dramas with the wet-out showing in the future, if you are worried that the blended area will show you could always have the quarter panels cleared at the same time so the finish is consistent in the most visible parts. Its easier to lose a wet-out in a Dog-leg panel or on a seam etc than right in the middle of the quarter panel pillar.
Most painters prefer 2K because once its sprayed the job is finished for them but Acrylic as you'd know requires more effort during and after the paint is applied.
#6
_Bomber Watson_
_Bomber Watson_
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Posted 11 February 2006 - 03:06 PM
personaly i prefer to do acryl acryl....looks a lot better.
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