How do I apply primer?

[MrWheelHop]

I am gona paint my s-10 all black primer for this year becuase it is like 4 differnt colors.IO can\'t afford a nice paint job so i plan on spray booming the truck primer black.What should i do to prep. the serface.I have no rot and the body is in good shape.What grit sand paper would I use to sand it down.I am a novice when it comes to body work.Please help.

[fasrnur]

Use 320-400 wet/dry to sand it wiyh then use a sandable primer to prime it with. Buy a tac cloth and wipe it down before priming it.



If you have any questions if you think I know what I\'m talking about,check out my pics. I painted it myself in my own garage.



Good luck and don\'t rush it.



Jeff......

[msa1t0t]

I agree but I with make sure to add a tack coat between sanding and final coat. In other words don\'t try to make it black with one pass. It might take three or four coats. I just bought an \'80 4wd Chevy that was camo, it took 15 cans to make it black, and it still isn\'t like I want it. If my wife would let me, I would just do one coat of gray and fade some black and dark gray over it. good luck, and check out the pics on our primer!

[MrWheelHop]

why would i use a sandable primer and not normal primber?I am using a DA sander so should i still went sand it whne i use it?

[fasrnur]

Sandable primer is for when you get ready to paint you will only have to finish sanding it before painting it. If you\'re using a D/A then you can go with either 180/220 or 240 to

sand it off. The D/A will make it a lot easier.

And yes on the first coat put it on light and then go back and put on a medium wet coat.

If done corecttly 2 coats should do. If not put on a 3rd coat. Where ever you go to bare metal make sure you have good coverage to prevent any rust popping through.



Good luck and if it runs with sandable primer just sand it smooth and apply another coat.



Jeff.....

[basementdweller]

Should you use primer/sealer where ever you have gone down to the metal?

[whiner3]

if it\'s down to bare metal you could generally use a metal etching primer.... if you want to do something cool wet sand it after it\'s primed with 2000 grit paper and then power polish it... if you wanted to you could also get a different brand on primer and apply flames in spots it will be a little different shade then do the wet sanding and buffing it looks really cool it creates a satin semi-gloss finish i\'ve seen custom paint jobs done like this as the finishing paint... it looks cool

[fasrnur]

Sandable primers are Primer surfacers and used where bare metal is shown. Primer sealers are to be used over paint and not bare metal. You can buy metal prep, it\'s an acid for bare metal, and the use the primer surfacer.



Have fun.....



Jeff.....

[MrWheelHop]

so does this sound wright.I am go to use my da sander with 220 sand paper.I am gona try ntot o sand down to bare metal but if I do I a still gona spray boom it with krylon black primer.Does that sound ok?Any suggetions?

[4more]

check out the pics of my 85 in my pics i spray canned it with semi-gloss black it was a good 40/40 truck/40 feet away or at 40 mph it looked pretty good

[fasrnur]

You got it! Good luck!



Jeff....

[RoyM]

I work in body shop, and have successfully spray bombed many cars, im working on my truck now. This is what im doing. *WARNING.Primer absorbs moisture* Okay. Due to spray paint being thin and enamel, it aint gonna last, it aint gonna hold up like a good urethane paint, or epoxy primer. Now, i would take a DA, with id say, 220,320, or even 400 grit (remember, since its in an orbiting motion, a 320 scratch is gonna be around a 400, vie versa for any grit) If u find scratches, feather them out. Get the body dull, and smooth. Now, their might be spots where u *burn* through to the previous paitn layers, or u might even get down to bare metal. After your done with prepping, clean the vehicle by rinsing it, blowing it off with air compressor, or just whipe it off. Then paint. Now, apply a tack coat first, just enought to get the truck all one color. Example, if u just go and try applying heavy coats of primer, when u hit bare metal, the pain will run and react differently to bare metal (thats why they make etching primer also, or one reason). So tack (light) coating first. After that, u can either allow the paint 24 hours to fully cure or u can paint in the window frame. The window time frame is the amount of time allowed for u to be able to apply another coat of paint, without sanding the previous paint, i belive this is also called wet-on-wet. For each coat, allow about 30 min window frame in nice warm weather, allow longer for colder before u apply another coat. Then after your done applying your deisred amount of coats, do not wash it for awhile, couple days (enamel paint, dried by evaporation, or by *air* so it takes awhile for a couple coats to cure fully).

Or, if u are the opposite of me, and dont care, take some sandpaper, sand it, then paint it.

Remember, this is for a body that has no rust, no dents/dings of any, if u wanna fix dents/dings/rust these directions would obviously change.

Im painting my truck flat black, then im gonna try gloss black spray paint. I did start painting my truck blue again, but i dont like that. Take a look at my pages to see my truck and the painting i did so far on it. roy

http://tchnohck.50megs.com/

[MrWheelHop]

ok man this is what I did tonight.I hooked up my DA with 220 sand paper and tried a small area out that I wanted to test.I tried behind the cab of my truck.I cleaned down a area of about 2 feet my 2 feet.I ran the DA over it and cleaned the dust off.Then applied a coat of krylon primer.What sucks is that the primer started to run.BUT I didn\'t go down to the bear metal like you said.I made it a piont not to so the primer would stick.All it did was run down.I put a very light coat on.I don\'t understand it.The serface was smooth and I shook the can up?Please make some sence of it.It pissed me off when the paint started to run though.

[whiner3]

some peoples definition of \"thin\" coats is different than others if it\'s running there could be soem kind of wax or soap residue on the paint still.... if thats the case wash the truck with dishwashing soap before you start... also hold the paint can about 9-11\" away from the surface... and always extend the paint can past the surface your painting before stopping... if you start or stop part way through a panel it can cause high and low spots and running.... the first coat of primer should barely cover the existing paint you shoudl actualyl be able to see it if you look closely... just a few pointers

[fasrnur]

Practice,practice,practice....it takes alot of it and you will screw up. Trust me not all of my paint jobs are perfect. Sometimes things happen that you forgot to do or the customer failed to tell you they had just used silicone on the hinges of the door or the wax on the car was a foot thick!



Just keep trying...you\'ll get it!



Jeff....

[MrWheelHop]

do you think it might have ran becuase my sand paper is so corse?the serface felt very smooth.Can primer stick to that?

[RoyM]

U could actually spray primer on a surface that is baby smooth, it shouldnt run really. Enamel paint dries by evaporation of the solvent, as it dries, it shrinks into the cracks, so the scratches in the paint dont affect running or not. U might be too close. Keep can away about 5 inches, and go left-right, then right-left. Dont just apply a lot of paint on one stroke, do it lightly. Also, sicne i use krylon primer all the time, even the normal gloss paint, ive experienced times where the paint just wanted to run and run. Reasoning, temperature. When i paint in 40 degree weather, it runs a lot. If the object u r painting is cold, the paint will wanna just run off, if its warm, the paint adheres to it. Keep practicing. roy

[MrWheelHop]

yea man...It was really cold in my garadge.That\'s probly why.I was talking to one of my friends and we are gona prime and paint the whole truck.He does body work for a living so I should be ok.thanks guys.

[RoyM]

Well, if your friend does body work for a living, he should be able to use a gun, so why not do it right? Get some nice Epoxy primer, gun and a nice mask (dual cartridge, paint with hardners are DEADLY) spray epoxy on her. Epoxy is like the best primer to use, its tough, will hold up to daily driving, PLUS, when your ready for top coat, all u have to do is clean scuff the primer and shoot the top coat. Its amazing primer.. roy