you guys are crazy , and 80 grit is hnoes:

wetsand is tedious job and requires a lot of attention.

General Procedure:
1. Use fine sand paper, 1000 grit. Sprinkles water and sanding at the same time
2. Use a SOFT sanding block
3. Sand in a SLANT position. DO NOTUSE CIRCULAR MOTION.
4. Do it 1 sq foot area at a time.

But hell, if you want to repait your car, use a sanding machine, and sand it with some 800 grits. Touch up the holes and dents in the body (a whole other story). Machine sand it again, or if you want to becareful, do the wetsanding. Then primer it, then wetsand it again, then do the paint. When you're talking about hand sanding and stuff, you're talking about $5000+ paint job there where a person must pay absolute detail to every inch of your car.

 

I worked at a body shop for 1.5 years...my dad's owned one for 17 and done body work for 31 years...we used circular motions while wet sanding all the time.

 

It's very easy to sand to much(through the paint), especially on ridges. Just keep it wet while sanding. Use a block with the sand paper on flat surfaces, and your hand with no block on the ridges, contours, etc. Also, be carefull with the polishing wheel. It's easy to take to much paint off with it also. It takes practice to get good. I've done it before, but i would consider myself far from being good. I am alot better at tinting windows than paint and body work. The secret to a good paint job is the prep work. Also, lots of practice and experience. Just be sure to sniff all of the paint fumes everytime you paint(joking). I've actually heard where people can't do this for a long period of time without actually screwing up your brain. Probably not a good profession to get into.

 

with wet sand h:

 

Wet sanding is for wimps.
Real men use sandblasters.

 

If you don't know how to do it, I reccomend you not trying it.

 

when we preped my sisters civic, we went nice and gental with 270 grit, took us 3 days, 4 hrs times a day. we wetsanded touched up repeated, washed down repeated and right b4 paint we washed use 1000 grit and washed it again but mind u this is for a show car. and what some1 posted thats y they make masks and not those cheap ones from home depot they dont work. my friends body shop uses gas masks but we didnt want to buy em so we took his, and his brain is fine (althought he is a bit strange but he has always been a bit special)

 

Wierd. I guess it's different for everybody since I work with my cousin for 5 years and that's how every bodyshop guy told me. And they've been working for a long time. I guess it's each to his own :dunno:

 

my friend says...45 degree angles

 

interesting. usually you dont want to wetsand in circular motions. you want the surface to be evenly sanded. sanding up and down for a few sets and then switching the motion to left and right while constantly applying water with a very light oil free detergent. :dunno: