bothched paint jobs no.2

[demetris]

To any experienced paint job person out there…. please explain the procedure of a garage spray job to me? Apart from the temp being over 15C and masking things off etc etc….Is it a case of the surface being rubbed down to provide a suitable surface for the top coat to adhere too, ?does it need primer? Clear lacquer? Reason i ask is i took the care for a paintjob and it came back and is patchy in places, and the patches seem to show up more under certain light conditions, it is as is if someone took a dish cloth/scourer to the surface and had a good rub! being smoke silver does not help and initially during strong sunlight the guy could not even see what i was talking about, but surely it is just a case of spraying adequate amounts of paint on the surface! I am worried I have paid the guy has done a crappy job, he will do it again but I am worried that when he paints the whole bonnet it will be another disaster!!!!any advice would be great

 

[MotardMan]

Demetris,

Sorry you have had a bad job done. My car is smoke silver too, and metallics are notoriously hard to match, if panels are not sprayed at the same time. The worst light is sodium discharge street lighting (orange), that will show even the slightest blemish.

I worked in ICI Auto refinish as a paint rersearcher some years ago, so know a thing or two about car painting/refinishing. We would totally strip the panel as far as possible of trim, and wet sand it with progressivley finer grits. This provides a nice flat base to paint over, and removes any trace of polish or debris from the surface. The next step would be to spray a flat fill primer and sand it wet until the panel was totally smooth. We used a yellow primer/fill, to make high and low spots easier to see.

Once happy the panel was clean prepped with a solvent to degrease it, and a primer was applied and in the case of 2 pack, baked. For a light metallic, we would use a white primer, flash it off (let the solvent evaporate), and build layers up for a smooth base. Then the base coat goes on, this contains the flecks of aluminium, or beads of glass, or a blend both depending on the effect you were after. It also provides the colour. The base coat is baked, and finally the clear is applied to seal in the base and provide a gloss finish.

Preparation and cleanliness are the keys to a perfect finish.

 

[demetris]

thanyou MotardMan

Blimey i appreciate your response! do you think it will seem a bit to keen to even suggest to this paint guy who has promised me to re-do things correctly that i tag along to help him in anyway possible?or will that seem a bit to over the top in his view? by trade i am far form being an expert at painting etc but am a dab hand at anything be it cars etc etc when i am told what to do or have the tools!

 

[Arnie]

MotardMan is completely correct in describing how things should be done.

I think it may be best if you can verify whether your resprayer has the correct equipment and know-how in the first place. If he's already got it wrong twice, I would insist on a refund and take then it somewhere else.