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ive got a e39 in orient blue, as far as i know there is only one orient blue, but not 100% sure if there is any other shades. When i bought the car it was damaged, and my mate painted all of it apart from the roof. Now a maybe 5-6 years later, rust came threw on the rear quarters, and also i needed to paint the sill.
So, i did all the rust proofing and stone chipped the sill, the stone chip was white. I didnt have a lot of paint, so i painted he sill with base coat aerosol, and the quarter with my spray gun. I cant quite remember but i think i primed the sill too with grey primer. On the quarter panel where i had repaired i would have primed for sure.
it was a hot bright day when i put the paint on, and the gun wasnt right but it was bright so i didnt reolise until later on the basecoat and the laquer didnt go on properly.
So pics
As you can see its very sunny today, and the sill looks completly different colour, i think that could be the white stone chip, but I'm not sure.
the laquer went on really badly, i tried everything to buff it up and failed quite badly.
In the sun the door looked completly different colour, in the pic the top of it seems to match the quarter which i painted.
So before i paint the side again, is this a colour match problem, or the way the gun put the base coat on and the fact the laquer is not right also?
In the daylight it looks ok, just today in the sun it looks aweful!
thanks
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Dez
Club Retro Rides Member
And I won't sit down. And I won't shut up. And most of all I will not grow up.
Posts: 11,712
Club RR Member Number: 34
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paint colour matchDez
@dez
Club Retro Rides Member 34
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You’re never going to get an adequate match with such a difficult colour painting edge to edge on a already previously painted car. You need to blend the repair, probably across multiple panels.
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Last Edit: Jul 3, 2019 19:55:01 GMT by Dez
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right yes i understand that but it looks a completely different colour?
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Dez
Club Retro Rides Member
And I won't sit down. And I won't shut up. And most of all I will not grow up.
Posts: 11,712
Club RR Member Number: 34
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paint colour matchDez
@dez
Club Retro Rides Member 34
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There’s tons of things that can effect colour as well as just the mix. But blurples are also an awful colour to match, so unless it’s the same paint from the same tin mixed at the same time, don’t expect it to match.
Then, if it’s been stood on a shelf for ages and you didn’t shake/mix it enough it won’t match. Even after that if that’s been in the sun for 6 years the paint that’s on the car with have 6 years of UV exposure and weathering that fresh paint won’t have.
You’ve already mentioned underlying colours, this effects some paints more than others, but it’s a factor none the less. As is temperature, number of coats, angles of panels (I.e. if doors where laid flat to paint rather than upright like the 1/4 will be, as the metallic and therefore the flip in the blue/purple will lay differently). Type and amount of lacquer. Ambient Temperature and humidity. See what I’m getting at?
There’s so many variables that the only way you’re gunna get a match is to shoot the whole side of the car in one go at the same time in the same conditions with the same product, and blend it into the rest in an area there’s shape or contour to trick the eye and loose any mismatch.
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oh right ok! normally you cant see the differences but last night in the sun it was quite obvious. Ill give it another go and see what happens.
when you put the base coat on, i remember my mate who painted it leaving the car for maybe 20 mins then doing the lacquer, is that right? other people have told me to just put it straight over.
Also how many coats of base coat would you normally do?
thanks!
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Has Dez states there are so many factors that can determine colour matching especially on metallic & pearlescent finishes - even things like how heavy or how light you apply the basecoat make a defined difference - has does the colour / lightness of the primer that you are applying the basecoat over (which why most professional bodyshops now utilise coloured primers) - you are asking how many basecoat - coats you would apply and again its all dependant upon many factors - what you have to cover, your spraygun set up, paint density, workshop conditions - type of paint (has you have not stated is it a solvent basecoat or is it water based basecoat) - If were in my workshop I would painting the side of the car to ensure the colour match by blending the basecoat down the panels and then clear coating / lacquering the entire side of the car
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right ok i understand, it is 2k base coat and 2k lacquer too.
I think what ill do is paint the quarter and sill again, and just see how it comes out, its really bad now, but that was my fault, the gun needed a good proper clean, i have done this now and do it after everything i use it.
I had done the rust on teh quarters before and touched it in with mixed aerosol and that matched quite well, but the lacquer went cloudy over time for some reason.
thanks
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