wet sanding gone wild...

[queens guy]

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?

[scapegoat]

Re: wet sanding gone wild...

The DA sander takes longer to cut the sanding marks vs a rotary buffer . You need to re do it again with a aggressive compound . This will eliminate the sanding marks , might have to do this a few times . Then change pads and polish for your final results .

[queens guy]

Re: wet sanding gone wild...

The DA sander takes longer to cut the sanding marks vs a rotary buffer . You need to re do it again with a aggressive compound . This will eliminate the sanding marks , might have to do this a few times . Then change pads and polish for your final results .

so can i use the mags 105 cut compound ?

[Detailing by M]

Re: wet sanding gone wild...

105 is not the problem here.
it's your pad and working time.
I have no idea what kind of pad you have so I can't tell you how to use it.
I use Micro Fiber pads to remove sanding marks. So try that.

[jarred767]

Another option would be to go over your 2000 grit sanding with 3000 grit sandpaper via a wet sand or damp sand, it should be much easier to remove those sanding marks with whatever compound/pad combo you use. D300 on a MF cutting disc should then do the trick, or if you need a little more, M105 on MF cutting disc is an option too. First though I'd go up to 3000 grit.

[drumdan]

Which color and size Hex Logic pad? How much pressure are you using? How many passes?

[Cypresswill]

I agree with Jarred767, move to 3000 grit paper and it should be a lot easier. If you have a rotary that would be best, if not, then you can continue with Megs 105 and a cutting pad. Good luck.

[queens guy]

Re: wet sanding gone wild...

orange pad medium pressure about 8 passes total

[drumdan]

How about arm speed? I've found the orange Hex to be a capable pad. If you have the yellow, maybe try that one. How is your arm speed?

[04blkpearlcoupe]

Re: wet sanding gone wild...

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?

I think I may have experienced the same problem you are having. I used M85 (diamond cut) to polish a part of my car which I had sanded with 1500 grit paper because I had recently repainted that panel. The compounding got rid of the sanding marks and gave it a factory-like shine but it also left a haze that was only visible when the light hit it a certain way. It turned out to be compounding residue which just needed to be cleaned off with some alcohol. I found that 70% or even 50% alcohol worked best because the 90% leaves its own haze.

[juliom2]

Re: wet sanding gone wild...

M105 would do the job. D300 on a microfiber pad could also be an option.
Meguiar's develop this to be used specially for DA polishers.