Can You Use the PC to Polish-out #2000 Grit Sanding Marks?
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    Can You Use the PC to Polish-out #2000 Grit Sanding Marks?

    Can You Use the PC to Polish-out #2000 Grit Sanding Marks?

    Fixing a chip and sanded down the touch up paint with 2000 grit. Was thinking of using new ScratchX on a DA to polish it out. Would ScratchX do the job on a 2000 sand job, or should I use something else?

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    Registered Member frustrateddetailer's Avatar
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    Re: Polishing Out 2000 Grit

    Quote Originally Posted by JJ1 View Post
    Fixing a chip and sanded down the touch up paint with 2000 grit. Was thinking of using new ScratchX on a DA to polish it out. Would ScratchX do the job on a 2000 sand job, or should I use something else?
    it will lessen the sanding marks but it will not take those scratches out completely. i think medium cut cleaner will do the job with a rotary. .
    before u rev em up, shine em up!

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    Registered Member Zet's Avatar
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    Re: Polishing Out 2000 Grit

    It would probably work better by hand, this is because you are able to apply more pressure in a concentrated area working by hand, compared to the PC. But it would probably take lots of applications
    "Now Biff... make sure that we get two coats of wax this time..."
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    Re: Polishing Out 2000 Grit

    Quote Originally Posted by Zet View Post
    It would probably work better by hand, this is because you are able to apply more pressure in a concentrated area working by hand, compared to the PC. But it would probably take lots of applications
    We've read that somewhere before...
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    Registered Member Mike Phillips's Avatar
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    Re: Polishing Out 2000 Grit

    Quote Originally Posted by JJ1 View Post
    Fixing a chip and sanded down the touch up paint with 2000 grit. Was thinking of using new ScratchX on a DA to polish it out. Would ScratchX do the job on a 2000 sand job, or should I use something else?
    Probably not. That said,

    "You never know what you can do until you try"

    It really depends on how hard or how soft the paint is. In most cases you can easily remove the sanding marks out of the touch-up paint because compared to the surrounding factory paint it will be soft.

    In the world, in most cases,

    "Modern clear coats are typically harder than traditional single stage paints"


    What this means to you when you go out into your garage to work on your car is that you won't be able to get the sanding marks out of the clear coat paint surrounding the touch-up paint using a tool that oscillates and rotates, but under pressure quits rotating.

    You could remove the sanding marks using a rotary buffer but in most cases the rotary buffer generates enough heat and power that while it's removing the sanding marks surrounding the touch-up paint, it will effectively remove the touch-up paint because the touch-up paint is softer and will not hold up to the power of the rotary buffer over the time required to remove the sanding marks.

    Complicated huh?

    A true artist can do it, but it requires a lot of time, you have to let the touch-up paint harden for at least a week or so before starting the sanding and buffing process and if you're paying someone to do this, and they apply the touch-up paint, that would mean two visits to your car.

    If the person is a true professional they're probably going to charge more than the average person is going to want to pay to have an area the size of a small chip work-on, on their car, (the small picture), especially considering most people don't like to pay what it costs to have a true professional work on the entire car, (the big picture).

    As Zet stated, you would probably be more effective using your hand because you can exert more force with your 4 fingers pushing down on an applicator pad than you can with a dual action polisher because all of your downward force is exerted and spread out and then diminished over the entire surface of the buffing pad.


    After applying a paint cleaner by hand to remove swirls and scratches to a car with a red single stage paint job and then turning the applicator over you can see that red pigmented paint accumulated the most where your 4 fingertips pressed down on the applicator pad. You get these same types of results when you're working on a clear coat finish by hand, (with a paint cleaner), except you can't see the accumulation of removed paint because it's clear.





    Make sense?


    Plus by hand you can control more precisely where you're applying the force. We've removed #2000 grit sanding marks by hand before, and it can be done, but again, how hard or easy it will be will completely depend on how hard the paint is surrounding the touch-up paint and your personal ability and technique coupled with persistence and perspiration.

    When it comes to touch-up paint, especially rock chip repair, there is no quick and easy way to properly do job with the expectations of great, and even just good results.



    Hope this helps...
    Mike Phillips
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    Mike.Phillips@Autogeek.net
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    Registered Member Mike Phillips's Avatar
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    Re: Can You Use the PC to Polish-out #2000 Grit Sanding Marks?

    Moving to Hot Topics as this question comes up often enough to make it a "Hot Topic"

    Mike Phillips
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    Re: Can You Use the PC to Polish-out #2000 Grit Sanding Marks?

    You can use a PC to Polish down to bare metal. A rotary is faster at removing sanding marks, but by no means is a PC ineffective. I've used #84 on a red pad and taken out 2000 marks on a hood. It took 3-4 passes, I was being lazy and didn't want to dig out the rotary.

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    Registered Member Mike Phillips's Avatar
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    Re: Can You Use the PC to Polish-out #2000 Grit Sanding Marks?

    Quote Originally Posted by yakky View Post
    You can use a PC to Polish down to bare metal. A rotary is faster at removing sanding marks, but by no means is a PC ineffective. I've used #84 on a red pad and taken out 2000 marks on a hood. It took 3-4 passes, I was being lazy and didn't want to dig out the rotary.

    That's only half the answer, this guy is working on top of touch-up paint, this creates a whole set of new issues that we outlined in our response.

    We also don't recommend using our cutting pad with our compound on this forum as it leaves the paint looking scoured and then people get upset because they think the paint is going to look good when they're done.

    So we don't want our members recommending procedures that cause the average enthusiast problems. The reason for this is Meguiar's will be held accountable, and you won't.

    Does that make sense?
    Mike Phillips
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    "Find something you like and use it often"

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    Re: Can You Use the PC to Polish-out #2000 Grit Sanding Marks?

    I understand your point. However its seems like the consensus is that a PC can't be used for serious correction work. It can, and IMO is much more safe than a rotary for a newbie. I can't imagine spending hours with scratchX when it could be done faster. I'll abide by your posting but that doesn't mean I'm not tempted to bring this to PM's

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    Registered Member Mike Phillips's Avatar
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    Re: Can You Use the PC to Polish-out #2000 Grit Sanding Marks?

    People can do what they want, but because of liability, accountability and responsibility, we don't recommend procedures that we can't back up with a high level of certainty that the average person can perform successfully when they walk out into their garage.

    At the same time we understand that many of our forum members are experienced and talented enough to successfully tackle more difficult procedures. It's a balancing act.

    Thanks for understanding.
    Mike Phillips
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    Mike.Phillips@Autogeek.net
    "Find something you like and use it often"

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