Wet Sanding gone wrong

queens guy

queens guy

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So I have a 2011 Nissan Maurano and I decided to wet sand a few scratches off the car. I used 2000 grit paper and i did this before with no issues on a few scratches with a scratch kit. Well I decided to get rid of 2 scratches and started to lightly wet sand them out. I then used my PA 7424 with Hex-Logic polishing pad and Mags ultra cut compound (105) followed by mags ultimate finishing compound(205).

Well fist time I am using a pa so not sure if maybe i did something wrong but after using the 105 i did not see much of a difference. I see a few scratches but still very dull. I then switched to the 205 with white pad and polished it a few times like 4-5 times and it got a little better but it is not the same as the rest of the car. I can still see like a dullness to it.

How can I correct this? I did not post pics cause you can't see it. You can really tell from a angle. Am i using the wrong compound? did i not compound it out enough?
 
How deep were the scratches? It's very difficult to tell without any pictures and from your description, but IMO one of two things have happened: 1) You simply have sanding marks that you have not compounded out 2) You have sanded/compounded through the clear.
 
Setec Astronomy said:
How deep were the scratches? It's very difficult to tell without any pictures and from your description, but IMO one of two things have happened: 1) You simply have sanding marks that you have not compounded out 2) You have sanded/compounded through the clear.
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Scratches were not that big but when i wet sanded i was left with dull finish. I passed over the same area like 8 times total. the area i did seams dull compared to the other half of the car door. I took pictures but can't notice on the pics so i did not post them.you can tell if you like 1 foot away from the car in a angle. Should i try to compound it out a few more passes or what? i am looking to get back that wet glass look.
 
If you sanded/compounded through the clear, there's no going back. Too hard to tell from your description what's going on.
 
Without knowing if you sanded through the clear or not its very hard to tell. But if you feel there is still clear there dont any more compounding. Go back and finish the sanding with 3000 grit. I dont think the PC is going to be able to pull out 2000 grit marks.
 
queens guy said:
So I have a 2011 Nissan Maurano and I decided to wet sand a few scratches off the car. I used 2000 grit paper and i did this before with no issues on a few scratches with a scratch kit. Well I decided to get rid of 2 scratches and started to lightly wet sand them out. I then used my PA 7424 with Hex-Logic polishing pad and Mags ultra cut compound (105) followed by mags ultimate finishing compound(205).

Well fist time I am using a pa so not sure if maybe i did something wrong but after using the 105 i did not see much of a difference. I see a few scratches but still very dull. I then switched to the 205 with white pad and polished it a few times like 4-5 times and it got a little better but it is not the same as the rest of the car. I can still see like a dullness to it.

How can I correct this? I did not post pics cause you can't see it. You can really tell from a angle. Am i using the wrong compound? did i not compound it out enough?
Click to expand...

Removing 2000 grit marks with a DA can prove difficult at times. Work the area again until it flashes, then mist with water and hit it again

Are you using Meguiar's Ultimate Compound or Meguiar's M105?

Microfiber cutting pads would help you A LOT too
 
The PC is not strong enough to buff out 2000. You need a stronger machine to buff out 2000.

My Rotary and Wool pad could handle 2000 grit with no problem.

You have to be careful because who knows how much you sanded off already.

What I would do is, if I only had a PC (not saying do this)

I would then hit it with 3000 grit (lightly) then buff it out with PC orange pad with 105, then mask the heck out of it. Then just live with the results.

That or invest in a Paint Thickness Gauge. (Just my opinion)


Good Luck!

Art
 
I doubt that you went through your clear. Take a close look at your paint, you would see a line of sorts around the area you were sanding if you actually struck through. I think it's just that the sanding made the area look dull. I'm being optimistic here...
 
Flash Gordon said:
Removing 2000 grit marks with a DA can prove difficult at times. Work the area again until it flashes, then mist with water and hit it again

Are you using Meguiar's Ultimate Compound or Meguiar's M105?

Microfiber cutting pads would help you A LOT too
Click to expand...
i am using ultra cut compound 105
 
erichaley said:
I doubt that you went through your clear. Take a close look at your paint, you would see a line of sorts around the area you were sanding if you actually struck through. I think it's just that the sanding made the area look dull. I'm being optimistic here...
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could be. I polished that area and around it and my wife could not tell it was different. All she noticed was the scratch was gone BUT I could tell it is not the same. I will try to hit it again with a few more hands of polish or or wax and see if i can buff it out.
 
It could be that 205 and white pads combo is causing da haze. Before you try any further sanding, i would try going with a lesser aggressive pad.
 
Is your pad turning the same color as your car? If so, you went through the clear.
 
Ok, that's great to hear! You didn't go through your clear.
 
Since you didn't go through the clear re sand the area with 3000 grit and then compound it out.

Buffing out 3000 on a DA is your best bet. Anything more aggressive then 3000 and you will get no where fast with a DA.
 
Thanks smack but i am going to try to buff out what i have first because i do see some visible scratches from the wet sanding. then i will use 3000 if i don't like the end results.
 
queens guy said:
Thanks smack but i am going to try to buff out what i have first because i do see some visible scratches from the wet sanding. then i will use 3000 if i don't like the end results.
Click to expand...

If that's the case then I recommend you use 3000 before going further. Polishing is not going to remove that alone
 
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