Sanding Steps To Prep A Car For Paint and Clear

Sanding Steps To Prep A Car For Paint and Clear


(rock music) – Hey this is Donnie Smith, in this video we’re going to talk about
how to prep a fender. The different grits of sandpaper to use, when you’re gonna prime,
when you’re gonna paint, a clear coat like a blend. In the previous videos you’ll notice that we already had a 80
grit to remove the paint. So we put the body filler on, and then we sanded this down
with eighty inch 150 grit. So we’ve got some 150
grit scratches there, so we’re gonna need to smooth those up. So, it’s kind of a good idea though, to determine what you’re
going to do to this fender before you just start
sanding it and priming it. A lot of times you’ll think
well I need to prime here, because that’s where
your scratches are too, any 150 grit needs to be sanded. So you may prep that either with primer, and then you may accidentally
go a little bit further, then you were intending
to with the primer. So if you get a primer on top of this and it hasn’t been sanded. Well then it’s going to
peel on you, and flake, and maybe after it’s painted. So this is a little different but I like to go in and prep the whole fender, before I do any priming or anything. This is what I’m gonna do. So right here, that’s where we already have our 150 strip scratches
from blocking this up. Place better, that’s 150. Okay so that’s the area
we’re gonna prime, too. But we’ll probably go
a little bit further, so we’re gonna sand out to this area. So we’ll probably sand
out to here with 320. ‘Cause we know that’s where
primer’s going to get. Now we’re gonna blend this fender, so we’re gonna get paint,
we’re not gonna paint the whole fender we’re
just gonna blend into it. The blends probably gonna
be right around here where the paint will be. So anywhere that you paint, you won’t sand it with a
four to 600, we use 500, but it could be four to six. Like I said we’re gonna
go with a 500 grit. So we got the 150 grit scratches 320 to where the primer’s gonna get. 500 where the paint’s gonna get. So what about the rest of this that doesn’t get any primer, or base coat. Well what I’m gonna do with this, is we’re gonna sand all this, and it’s just gonna
get clear coat applied. So all this area will be clear coat only. Your paint will probably carry
out a little bit further. You know by the time we’re painting, so it might get a little
bit onto this area. But all this area here, we’re gonna sand it all out with 800 grit. You can sand it anywhere
from 800 to 1,000. But we’re gonna use 800. Then once we have this
sanded 320, 500 and 800. That’s what we’re gonna use is 800. We want to be sure that all
our edges are stuffed good and there’s no problems in here we’re gonna have an issue with. So, I’m gonna use a gray soak pad, and I’ll go over the entire area, with a gray soak pad. Now, there are some chips up here that I didn’t mention and
we’re gonna feather these out. And we’ll feather it out with
a 500, final sanding with is if feather it out, if we
bust through the clear, you’re gonna need to apply some base coat. So right in here, this area right here, we’re gonna hit with a 500 grit. Now something important I want to mention, when you’re sanding in this
area here, this 800 to 1,000, is this area is just
gonna be clear coat only. Your blend’s going to be all in this area, this will be clear coat, and of course we’ll have
a little blend going here. But all of this, if you sand
through that clear coat, you’re gonna have to go
ahead and apply base coat. So you want to be very careful not to bust through your clear. If you busted through your clear, and then you apply clear coat on top of it, you’re gonna see that spot where you sanded through. So you want to sand it good, make sure you get good adhesion, but you want to make certain that you don’t sand through the clear. And edges like this, any body lines, that’s where you have to be
extremely careful of that. We usually use a DA to
do all of our sanding, a DA sander, so if you’re using a DA, kind of be careful around your edges. You don’t have to use a DA you
can do all of this by hand. Doing it by hand is a little bit slower, you can use the same grits,
but you have less of a chance of sanding through. So if this is something you’ve never done, and you’re kinda nervous about it, if you’re gonna burn through
it or not, sand through. You know you may just do it by hand. The DA works much faster
and it does a great job, you know if you take a
little bit of care doing it, a little bit of caution around your edges. – [Voiceover] Okay now I’m gonna show you. Sometimes it’s easier to
show you than to explain, I want to give you that basic information before I went through the steps. The first thing I’m doing is cleaning the wax and grease remover,
get it good and clean. Now I’m using a interface pad, anytime you’re final sanding,
or using the finer grits you want to use this interface pad. And I’m using 320 and I’m
going anywhere and out past the 150 grit scratches. So I want to make sure
all the 150 grit scratches are gone and anywhere primer’s gonna get, with 320 grit sandpaper. (“Work Week” by Silent Partner) Okay, now I’ve got that
area sanded with 320 grit, now I’m switching to the 500, and I’m gonna go out past the primer area anywhere that paint will be applied. I’m gonna sand this with 500 grit. (“Work Week” by Silent Partner) (sander buzzing) Now I have the surface
that’s gonna be painted sanded with 500, now I’m
switching to the 800 grit. Now remember this is the step you need to be very careful around
your edges, or anywhere. You don’t want to sand through,
’cause if you sand through, you’re gonna have to apply base there. So be careful around your edges. (rock music) (sander buzzing) (“Open Highway” by Silent Partner) So now I have the entire panel
that’s gonna be clear coated, I have it sanded with 800, now I’m gonna use a gray soak pad and I’m gonna go over the entire fender and especially on the edges and make sure everything’s sanded
good and not gonna have any places where paint
or clear coat may peel. (“Open Highway” by Silent Partner) And another thing I’m
doing while I’m scuffing it I’m gonna be painting the jambs on this, inside the jambs because
it was not painted. So I’m gonna go ahead and scuff that and get that all ready,
while I’m scuffing. Spraying on with some
wax and grease remover and this will clean it off where I can see it real good
and make sure there’s no glossy spots left, if there
is I’ll need to scuff ’em. (rock music) I had forgot to sand those chips out, on top of the fender here, so I’m gonna go ahead and do that now. Once I get that done, I’m
gonna re-clean the fender. And then check for any glosses or spots, or areas that may not
have been sanded well. Inspecting the fender, I found one spot that needed sanded a little better so I’m gonna get it, and
then I’ll re-clean the fender and get it ready for prime. So that basically wraps up this video, and goes through the
steps to prep a fender to get it read for primer, and it will be ready for paint as well. Thanks for watching this video and be sure and go to
collisionblast.com and subscribe, you can subscribe for free. And you will receive the
hours of free training and videos like this. Appreciate it if you’d like this video share it with your friends. Thanks for watching, and we’ll
see you in the next video. (rock music)

100 comments

  1. Good teaching techniques!! Using a marker to show what grid should you used…Good visual aid!!! You can reference and avoid using the wrong grid!! 

    Thanks…UR Da Man…
    Ray

  2. Using the marker was a great idea.
    Can you please do another 2 videos with the same fender where you show how to blend paint and another one where you polish the whole area 

  3. Thanks for all of your clear and professional videos on repair, fillers, sanding and painting. I could not have tackled the rust on my car without them. I'm a 70 year old grandma, and I did a pretty fair job making my 11 year old car look respectable again. You are the best!

  4. videos are great. they really do help a lot…. but i have a few questions before painting my car and what should i use Acrylic Enamel, Flat Black or Rust Oleum Auto Body Paint, Jet Black, Satin  Q1 what grit of sandpaper should i use if there is no dents/chip paint or scratches? Q2 after i sand down the car do i have to apply a primer? if so what do u recommend? the paint i will be trying out is rust oleum or krylon flat black paint… i painted my car before but i used plastic dip (rubber coating) just this is something new i trying just want it to turn out right…

  5. My car looks horrible and i want to at least sand the rust and paint off of my hood and roof. My roof has completely rusted over ( ugly orange brown color ) and the hood has two big rust spots on it and i just want it all gone.  I did use sandpaper on the roof and its smooth now but still brown. 

    My uncle has an electric sander and im thinking of using that to just wipe that mess off of the hood and roof of my car.  what type of sand paper did you use to prime the first part of that fender? I would link pctures to my car if you would like to see what im talking about lol. its bad.

  6. Prep and paint the whole fender. No shops can or will have the skill or will spend the time to do a good job and if you want to pay for excellence – it's not there to be found in a bodyshop. The paint will not match but that will not matter because within a year the clearcoat will peal away from the original paint. By that time your buddy at the body shop will say "Who the F**K are you?" – and then you'll have to pay someone else to paint the WHOLE fender. The guys that used to do a great job? Died and gone with lead bodywork.

  7. WTF is it with guys making vids to do with cars and echo! All do it and can't here a fucking thing or add music etc to make it worse… Fellas listen to the editing not just watch it…

  8. Hey Donny, do you or have you ever used rubbing alcohol instead of wax and grease remover? I ask because some guys say it's okay to use, and it less hazardous to your health. Thanks.

  9. good one. learning a great deal from your videos. One guestion tho. after doing the 150 area. do you go over that area with the 320, then do you go over that those two areas with 5-600 . then the entire fender from front to back with 800?

  10. what if your sanding a car that the clear is fading in spots..gonna sand whole car but do i need to go down to metal or can i stop once clear is all off??

  11. I went to school for collision repair. It would have been a blessing to have you as my teacher. A good teacher with a good attitude, a gem indeed. Thanks for your videos and tips.

  12. Hi great video . I'm going to be repairing a fender on my truck . and repainting the whole fender. also I decided to just repaint the whole truck and re clear it. same color as it is now {Flame Red} what should the final sanding  be for the fender I have the primer on.  and what is the final sanding for the paint that will just be painted over with the same color. if I under stood you in the video you finished with 800 before paint and clear. Please let me know any changes I need to do. I'm using a 2k primer and clear but the base isn't 2k.The paint, primer and clear will be bought at R&E paint supply .spry cans.

  13. thanks for sharing! I'm actually going to be painting my truck this summer but didn't know how to go about sanding the old chipping, failing clear coat and oxidized paint patches.

    still need to do my homework, my truck is my baby so I want to do a great job.

  14. I like this video it
    helped learn how to sand properly … a little heads up for
    everyone who plans on doing this. While I was doing this I had a hard time with
    all of the dust. I needed something to filter the air but I cannot use the
    typical dust mask because my safety glasses always fog up. My neighbor told me
    about a cool product the Air Commander Respirator. I bought it off of Amazon
    and it filtered the air just great without fogging my glasses. Anyway thanks
    for the great video now I have to start sanding the quarter panels yuck!

  15. I like the idea behind your videos, but I just can't understand a thing you're saying with all the echo. I know this isn't a new video… maybe you have that problem fixed now.

  16. Wouldn't you be better off just to paint the whole fender and clear the the whole fender instead of blending the two colors that might be a shade off ? Let me know please

  17. almost unwatchable because of the audio it sounds as if he's in a garage and he is a having a severe Echo seriously use a collar microphone it would save you the trouble of being commented on as a complete and total video moron

  18. Prime the whole fucking panel and have done with it
    what a waste of time
    Then you use just one sandpaper for each sanding
    and you have no trouble: the panel will not need feathering
    and the result will be even

  19. Primer and paint, I thought he wasn’t gonna go base coat ? Oh, I get it he’s gonna just prime part of it and then base coat part of it

  20. I've been researching into painting with a spray gun and found a fantastic resource at Magic Painter Method (google it if you are interested)

  21. I don't know why everyone being so sensitive and picky about not being able to hear with the music it did not affect hearing what he was sayin at all. You guys are worse than children you complaining about anything 2you can be negative about. I guarantee none of you found a channel you ever liked or ever really learned anything from because you're too busy with the critique of the content and knowledge being taught.

  22. In the area where your just using 800 for the clear coat blend, could you use something like trizact 1000 wet?

  23. .25 into this vid and I’m out. Sound is horrible and he decided to shoot video four blocks away.

  24. So getting primer on anything 180 and above (320, 500, 800) is OK and primer will stick.
    Then you sand primer using 500 to get ready for base.
    Base coat will stick to 500 or above.
    Clear will stick to 800 and above, and any base that has been recently sprayed.

    Is my understanding above correct?

  25. Why do people who put these videos on YouTube (rank amateur to professional) think they've got to put some kind of damn annoying music in the background?

  26. thanks for that! learned alot about the importance of various grits, awesome! Also is that an orbital sander? Well thank you again, have a great Christmas

  27. Thanks for the information but damn man… we DO NOT NEED ROCK MUSIC PLAYING. What the hell is that FOR ANYWAY? I tuned in for ONE specific REASON (which is obvious)… NOT to hear vexatious, highly irritating, annoying rock music which I cannot STAND the sound of. I'd rather hear a Briggs & Stratton Lawnmower engine running.

  28. Wow! This video is awesome. A great summary of the sanding steps throughout the paint process. Very well done and summarized. THank you.
    Audio could be better but hey, free info. Thanks again

  29. You should please the sound God for better good !
    The first video I ever saw had sound barely one could hear and this video has too much echo !

    Enough of your vids and thanks for wasting our time.

  30. Why dont you remove the background music after the intro and before you start spraking. The sound is terrible.

  31. So what Grit is the grey scuff pad? Also after you prime do you sand again before you paint and if so what Grit?

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