Wet Sanding

[Outlaw Racing]

1st off I had my car painted about a week ago, and the painter forgot to clear a area not once but twice. My question is when I have that area cleared do I need any special preperation or just a clean area and spray? Also how long do you wait to wet sand a paint job?

[Rob G.]

1st off I had my car painted about a week ago, and the painter forgot to clear a area not once but twice. My question is when I have that area cleared do I need any special preperation or just a clean area and spray? Also how long do you wait to wet sand a paint job?
If you have an area that wasn't cleared you can just spray over it with clear if it is done within 24 hrs. If it is longer than 24 hrs the base will have to be scuffed for clear adhesion. For wet sanding if the cleared was baked on it is ready for wetsanding after cool down. Most of the big jobs I have done, I just let them air dry and I do not bake. On air dried jobs I have always waited a few days before wetsanding with amazing results.

[Horndog]

If you have an area that wasn't cleared you can just spray over it with clear if it is done within 24 hrs. If it is longer than 24 hrs the base will have to be scuffed for clear adhesion. For wet sanding if the cleared was baked on it is ready for wetsanding after cool down. Most of the big jobs I have done, I just let them air dry and I do not bake. On air dried jobs I have always waited a few days before wetsanding with amazing results.



I always heard that you do not want to scuff the base on true base coat / clear coat systems? Wouldn't that area of base color be "off" from the rest if it is scuffed?

A buddy of mine years ago would spray enamel, color sand it and then follow w/ two med coats of clear, sand, two more med coats of clear, sand, one med coat of clear and final sand/buff. The cars he did like this turned out excellent. He and three other top painters in my area all let the clear coat air-dry.

[68Bird]

The base is usually so thin, I'd think you'd sand thru it very easily and you'd have to re-base coat then clear over.

Craig

[gofastmerc]

If the base is a solid color, you can scuff and reclear. If its a metalic color, you will have respray some color and then the clear.

I agreee with Rob on the dry times for polishing.

[noslix]

Depending on the paint manufacturer you will have a 12 hr to 72 hr window to clear after the base is applied. Depending on the color, you may have to scuff the panel and reshoot one coat of base, then clear. Or you may need to scuff the panel and adjoining panels and blend a new coat of base onto those outbound panels and then reclear. Even with a solid color, I'd scuff, do one more coat of base, and then clear.

[Outlaw Racing]

This is turning into a F,N NIGHTMARE. It,s a good thing that the area in question is only a small spot on the drivers side fender just below the trim on a Mustang. I know this is pretty BUSH LEAGUE but I am going to just clear over it im my garage.

[bgblckbeaumont]

what is the manufacturer of the base clear?

[Outlaw Racing]

The base is PPG Blue Pearl and Nason clear.

[bgblckbeaumont]

you have a pm

[1986iroc]

you must re base after 24 hrs. If you just sand and clear then you will see the sanding scratch's in the clear.

[Flagflyer76]

wipe with a tack rag and clear it, it will stick. May want to use a spray can of burn in which is like reducer in a spray form that you spray lightly over the edge of the new wet clear that overlaps the older dry clear. helps the new clear edge to fade away into the older clear. Or just have the whole fender recleared. Good luck:drinkers:

[Ludicrous Speed]

I know that you are not supposed to let the base sit w/o clear for more than 24 hours, but I have done it while masking off graphics and just not having time to finish. I went ahead and cleared over everything and have had no problems with adhesion. I still have one of the jobs and it is five years old and looks awesome!

I would just shoot it!

[BruceO]

Spray some BullDog adhesion promoter on it and then clear.the right way would be to sand ,rebase and clear.next best thing and easy is the Bulldog deal.