I heard of someone saying that they can get their car wet sanded to remove minor imperfections. -Like wetsanding the paint to make it shine better...

What do I need for this?? Microfiber? 3k Grit W/S paper??

 

I'm not an expert at it, it's potentially damaging. I scratched up my rear bumper on my camaro not knowing better.

I did remove a light scratch from the Tahoe rear fender by wetsanding, it later came back and I had a shop hit it with a wheel, (which cleaned it almost all the way up)

I would save wetsanding for those with lots of experience and only the most extreme situations. a good claying should take care of your needs better IMO.

I think the few times I've done it, I've used 3K or higher.

 

I wouldnt do it unless you know what your doing. You could really f things up.
But if you wana anyways:
1. wetsanding is going to remove the most clear coat the fastest. So you can get out scratches, blems, etc much easier than buffing the car. As the car sits outside in the sun the clear coat slowly gets oxidized(sp) and gets duller and duller. Thats why you buff them to get the old clear off and let the new stuff under it shine.

2. I would start with 2500 or 3000 grit. Get a block(flex preferred) and go to town. Watch the edges and corners, the paint will be thinnest there. You can easily go through the clear, paint and be down to plastic in a few strokes so watch out. THe middle of the panels should be able to withstand the most sanding.

3. If you have real buffer or a porter cable get out a heavy to medium compound and heavy to medium pad. You dont need heavy grit compound and the most powerful cutting pad. So either go polishing pad and heavy/medium git compound of the other way around. If you use both you will be removing way too much clear.

4. Than begin buffing out all of the scratches from the paper. Again watch the edges and corners. If you very light with the paper in those spots you shouldnt have to buffing the **** out of them to smooth. If you f up you will see it here. Black plastic of or alum. will be showing.

If you really want to do this i would go to your local bodyshop and ask for a scrap panel, door, hood. Whatever. Practice practice practice. Try to sand almost to the plastic so you have an idea of how much clear can be taken off safely. Maybe buy some 1500 grit, go to town with that, than go over it with 2500 or 3k and than try to buff it out.

Scratch the crap out a small spot, down to the metal or plastic. Get primer and paint touch up and try to fix it. First primer, than fill it with paint. Than block sand the excess to make it look new again. Really just screw things up and try to fix them, a trial and error process. Maybe read some articles online or buy a bodyshop book.

Ive worked in and out of bodyshops all thorough HS and college. This stuff can be tough and it can be easy. I still get stuck with some things, it will take a lot of practice (hence above) and time.
Good luck and please dont mind my grammer errors.