EG-SIXV-TEC

hi for my project my eg has some surface or starting to rust on the top of the roof. i see the paint kind of fading just on the roof areas and some side of the car. im still learning to do some body work etc.
i need to know what type of compressor would be good legitamate for my home use. would a craftsman 30 gal be find whats diffrence horizantal or vertical. and i am looking for a dA sander, what legitimate brand is good does ebay types okay. and for the paint i will use a spray can for now.

i want to paint the whole roof primer color and maybe a flat black, for now just to keep it from rusting.

what would be some easy steps just to prep a basic roof/
my paint is original white and the clear coat looks almost faded and some rust looking areas. i want to save the car from rust.

joeshmo

Primer will not stop rust for very long. If you're going to prime it, paint it as well. Primer is porous and will allow water to rest on the current metal, accelerating rust.
For a general guideline, if you want to use a tool continuously, your air supply should put out at least 25% more air than the tool uses. For example, a gun needs 8cfm, you should have a 10cfm compressor.

I bought a gas, 7hp 11CFM compressor and it has suited my needs but I do mostly panel painting. The DA I have won't put a dent in the air but the gun uses alot (it is a Devilbiss Startingline). If you buy a cheaper gun with a slower transfer you could get away with say an 8cfm compressor.
If you REALLY only plan on painting once in a while and you only want to do a single panel at a time, a 2hp 30 gallon would work. You need to make sure the tank fills all the way before use and give the little motor time to build up more pressure during use. The difference between horizontal and verticle is the orientation of the tank, and that is about it. I have a KOBALT DA that I picked up from lowes for about 20 bucks on clearance. I have several lower end sprayguns and I'll tell ya what, the 12$ gun from harborfreight does a decent job if you keep in clean. I have also heard some good stuff about the Grizzly LVLP gun, which would be great for a smaller compressor.

If you DO choose the paint the roof flat black, use a spray gun and some REAL AUTOMOTIVE paint. Make sure to remove all of the rust prior to shooting the paint, and I mean REALLY REMOVE IT. Don't spray over it!

EG-SIXV-TEC

ok thanks i will look into that 25% more tank and gun etc.

what do i do to prep the whole roof. what grid do i start off and finish till i paint the primer and then the flat black paint.

what steps can i do to prep for painting.
can i da sand the whole roof until i remove the top paint.
do i have to sand all the clear,white paint, off to the original primer???
and paint it??

joeshmo

It all depends on how long you want the new paint to last. The absolute best way to do it would be to remove all paint down to the metal, Which I usually use a stripper for (aircraft remover works, but if you are painting just one part of the car you need to be VERY CAREFUL as to what you strip.) Next I would treat any rust problems and do any necessary body work, followed by 80 grit paper on the D/A, followed by epoxy, surfacer and then my color coat. I'm guessing you are planning on doing a cheapy job, in your case I would go to bare metal in any areas with rust/around the rust using either a stripper or 80-150 grit sandpaper. All of the other areas not affected by rust/plague you could go over with 180 or 220 grit. Next I would grind/sand any rust COMPLETELY out, use an etch primer (which is rather cheap) or a direct-to-metal surfacer. Block out the surfacer if it wasn't sprayed well, then shoot your color coat. Make sure you finish all of the hood in the same grit (depends on your paint type, epoxy likes 80 but most primers like something a bit higher.)

And as for the compressor, it is the COMPRESSOR itself that needs to exceed the need by 25%, not the tank. Tanks are good for if you need to use a tool that requires lots of air for a small job with a small compressor. Good compressors cost BIG money, even used I would expect to pay 300-400 dollars for something that is capable of doing much body work, and that would be a 220v unit as well.

Cd316z6

Whats up guys? quick question if i may? Will an 8 gallon compressor be enough to paint my eg? Just gonna shot some single stage, not goin for showroom.

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eyecandynsx

gallon size really doesnt have much to do with anything... you need to know cfm, thats the most important factor.

ofthesun94

compressor doesnt matter but the gun does. make sure you use a filler primer and a lot of wet sanding between coats tcpglobal.com for paint and supplies

joeshmo

Lol @ compressor doesn't matter. You couldn't be more wrong.

ofthesun94

Dude its the CFM all u need is 30 psi and 8-10 at the gun ive painted cars worth more than anything you own

joeshmo

13-17CFM at the gun, for most GOOD guns that you'd use to paint GOOD cars (that are worth anything I own.)

Most 110v compressors can't put out even 8-10, or anything close to it. You can have the best gun in the world but still not get decent results without a good compressor. Plus, a decent DA can eat WAY over 8-10CFM..

Gallon size doesn't matter nearly as much as CFM output (which is determined by the compressor, exclusively.) Even good guns are useless without a good compressor. If I had money, I'd spend more money on a compressor than on a gun.

Cd316z6

So not to beat a dead horse but im gonna take that as- 1 for the 8gallon, and one against it. Hmmmm still feelin a tad unsure of who will pull out the win...

eyecandynsx

8 gallon doesnt tell us anything! What is the cfm of the compressor??? But Im willing to bet its nowhere near enough cfm for what you want to do. My compressor is 11.5 cfm, 60 gallon...