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Painting over orginal paint

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by rampage, Aug 1, 2001.

  1. rampage

    rampage 1/2 ton status

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    I need to paint over the orignal paint on my quarter panel to a darker blue. How do I prep the surface to make the paint adhere properly? Do I wet sand it with 1500 grit and then paint it or is there something more to it?
     
  2. muddin4fun

    muddin4fun 3/4 ton status

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    I think you just use a fine grit paper to just sorta scuff it up some. Some body man will be along I'm sure [​IMG]

    I've got a mind like a . . . a . . . what's that thing called?

    <a target="_blank" href=http://www.geocities.com/muddin4fun79blazer/>http://www.geocities.com/muddin4fun79blazer/</a>
     
  3. 1500? Hell no. That stuff is for clearing up scratches in clear coats and stuff.
    You need to go with a 220 or something like that, anything about 180 adn below 320. Some places use a scatch brite but I personally dont think it leaves a goo stratch for the new paint to adhear to.

    Damn I need to learn how to use my welder!![​IMG]
    (90 Jimmy 350 TBI, 14 FF/10 bolt, 4.56, tires ??
    (ftn96)
     
  4. RaisedK5

    RaisedK5 1/2 ton status

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    You're gonna want to wipe down the panel with a wax and crap remover, then scuff it up so it will adhear, but you do want to get all the wax and junk off the paint.

    Leland aka RaisedK5

    "Of all the things I've lost, I think I miss my mind the most!"
    "Are the voices in my head bothering you?
     
  5. beater74

    beater74 1/2 ton status

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    ya wanna wipe it down with acetone befor you paint and ya 220 is about rite
     
  6. acetone or a good paint thinner will do. Dont use mineral spirits. Most brands I have used leave a little bit of a film at times that the paint doesn't seem to like.

    Damn I need to learn how to use my welder!![​IMG]
    (90 Jimmy 350 TBI, 14 FF/10 bolt, 4.56, tires ??
    (ftn96)
     
  7. muddin4fun

    muddin4fun 3/4 ton status

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    [​IMG]

    I've got a mind like a . . . a . . . what's that thing called?

    <a target="_blank" href=http://www.geocities.com/muddin4fun79blazer/>http://www.geocities.com/muddin4fun79blazer/</a>
     
  8. Pugsley

    Pugsley 1/2 ton status

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    Save yourself some headaches and buy a quality cleaner like Napa/Martin Senour's TecClean - a quart only costs a buck or two more than a gallon of cheap reducer, and it's engineered specifically for cleaning/prep. After that, scuff it up with 220 paper, and fill any pits with a good scratch putty, and you should be ready to go.

    Generic Signature
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  9. rampage

    rampage 1/2 ton status

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    When I use the 220 grit is that a wet sand or dry sand or doesn't it make a difference?
     
  10. Pugsley

    Pugsley 1/2 ton status

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    Do it dry to get a better scuff - after you've got it sanded, give it another cleaning and a pass with a tack rag, and it should be ready to go.

    Generic Signature
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  11. Pure Insanity

    Pure Insanity 1/2 ton status

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    WHOA!!! STOP!! DONT DO IT!!!

    And a body man has showed up, as Lara said. HAHA!!

    If all your doing is repainting a panel w/ no damage all you need is 600 grit wet or dry (and use it wet) 220 will DEFINATELY SHOW THRU! Too agressive.

    If there is scratches or chips use 320 on those then go 600 back over it, unless you use a sealer. Even then Id use 400.

    Raised K5, It looks like I pirated your sig. Sorry! Ive been using that quote since I was 15 and Im........well Im getting old and been using it a long time! [​IMG] I will change it right after this post! [​IMG]

    Of all the things I've lost, I miss my mind the most!![​IMG]
     
  12. Pure Insanity

    Pure Insanity 1/2 ton status

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    There a new sig. Now I feel better! [​IMG]

    I get all the excercise I need pushing my luck![​IMG]
     
  13. rampage

    rampage 1/2 ton status

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    Thanks pureinsanity. I'll be doing that this weekend. There are no dents or dings in this panel so I'll just 600 grit it ... got tons of that right now since I'm wet sanding the entire truck. Damn, what a job.
     
  14. wayne

    wayne 3/4 ton status

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    And this is from another bodyman. Yes you can use a scotchbrite pad. You can use the red scotchbrite and lots of clean water to prep. No matter what you use weather it is 400, 600, or scotchbrite make sure you clean it well before you sand it and also when you are done sanding make sure there is no shiney spots where you need to paint. Also when you sand DO NOT use your hand use a sanding block.

    <font color=blue>Wayne<font color=blue>
    <font color=blue>Happy Trails<font color=blue>
     
  15. rampage

    rampage 1/2 ton status

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    Out of curiousity, why not use your hand to wet sand? I went to a body shop the other day that was working on a Vette and I noticed the guy wet sanding with his hand, no block. What's the diff?
     
  16. Pugsley

    Pugsley 1/2 ton status

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    Your hand will have varying pressure points, and will leave waves or grooves in the surface, where a block provides an even surface. You may not see it until the finish coat is applied, and there's all sorts of "fun house" reflections in the paint.

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  17. wayne

    wayne 3/4 ton status

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    Thanks Pugsley. You were quick on the draw for that reply. [​IMG]

    <font color=blue>Wayne<font color=blue>
    <font color=blue>Happy Trails<font color=blue>
     
  18. Pugsley

    Pugsley 1/2 ton status

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    Why thank you (Blowing smoke from keyboard) [​IMG]

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