Respraying clear coat please help

[walshy155]

Hello everybody, I've been searching all over the internet but can't seem to find a straight answer and I realised I had a forum account on here. Anyway I've just bought a new SGS 24litre 9.6CFM air compressor and a Bergen HVLP 1.4 clear/basecoat spray gun the reason being that my cars clear coat is failing on the bonnet and pillars which is common on these cars being a Fiat Punto mk2 2007 in Caribbean Orange the failing clear coat only seems to effect this colour anyway I've got some experience in paint spraying as I used to fabricate gates and railings and I was taught to spray them with an expensive electrostatic system. Now the problem is as I don't have much experience on cars only repairs I have done before with aerosols which turned out pretty decent. I've pressure washed all the laquer of the bonnet so it's now matt, what should I do now? Sand the base coat with 2000 or similar grit sandpaper or just go ahead and spray the 1k clear coat on? (Would rather no use 2k, as I don't own a air fed mask). And should sand the edges of the laquer on the pillars and spray a few light coat to seal the old laquer edges down? Any advice or suggestions welcome, it would be appreciated

Thanks guys

 

[richie00boy]

To be truthful I don't think your compressor is enough to run a hvlp gun for a bonnet.
Because your basecoat has been exposed you should key it and re-apply, then clear over that within a few hours.
All your existing edges will need smoothing and blending basecoat just past.

 

[walshy155]

Okay I'll have to use a better compressor, although the specs for the gun require as it shows on average 6.4cfm. Also what should I use to key the base coat?, also I'm not sure what type of paint is on the car, is it urethane? Is that a 2pack paint? What type of paint will I need to buy? I would like to spray it myself but don't want to go near iso-cyanate based paints. Is It likely the paint will fail if I do not re apply a new basecoat?

Thanks

 

[Rocketman]

If you try and sand the orange base colour - I assume it's metallic and then clear over it the end result will not be great. Basically you shouldn't sand base colour metallic which is basically what richie00boy is saying.

You can do it all in 1k it just won't be as hard wearing as the original paint and uv protection isn't as good as 2k.

As Richie00boy say you are going to have to blend it. I would think on the wings you would have to go as much as 4 inch. Also the problem you have is that you will need to get the paint you buy colour matched.

 

[walshy155]

I think it's a solid colour Rocketman as it does not sparkle and I can't see any shiny pigments in the paint, I'll see where I can buy some base cost for it today

 

[steveo3002]

you cant sand base coat , proper answer sand it all off and start again , clear coat within an hour of the basecoat going on

 

[walshy155]

Okay thanks guys I'll sort some new paint out, thanks for the help.

 

[steveo3002]

if its a cherished car i wouldnt bother using 1k clear either , doesnt hold up to the weather half as well as 2k

if its a tidy up on a banger then yeah fine....

 

[walshy155]

Okay looks like a body shop is a better idea then

 

[marlinspike]

Would it be worth looking on ebay for a better condition bonnet in the right colour? Guess if it is a common problem they all go the same. I think a professional respray might not be worth it when you look at the value of the car.

 

[walshy155]

I'd say the car would fetch about 1200 on a dealers shop front, so maybe a better condition bonnet is a cheaper option

 

[MG David]

While I dare say people are correct when they say 2k clear is harder wearing than 1k, I have only used 1k clear and I have not had any problems. The 1k clear I use is from Upol. Exposed parts of my MGB's body were done over 5 years ago and the engine bay was done nearly 10 years ago. It may be that because the car is white and kept in the dark when not in use that the clear has not caused a problem. I have also used the 1k clear on my modern (2004) Jaguar. That was 2 years ago. The car is metallic red and it is kept outside so it is exposed to the sun.

 

[walshy155]

That's good to know David, I ending up respraying the laquer after sanding the basecoat and giving it a light coat of colour, it turned out pretty good so I'll see how long it holds up in the future, if it gets bad I can just re spray it again it didn't take long to do, my only downfall is slight orange peel effect in the laquer which maybe a good buff will get out