Etching marks coming back after wet sanding and polishing?!?

B

Broham

New member
Hey all, I made a mistake a few years back of parking my car under a radford pear tree and the berries left etching marks on it. Recently I decided to shine my car back up to the way it use to be and started polishing it. After using Adams polishes 3 step correction polishes I noticed the etching marks weren`t being removed. I talked to a local detailer and a neighbor that is a painter and they suggested using 3000g sandpaper with my portercable and wetsanding the spots that I could. The painter also let me borrow some of his 3m perfect it ex compound. The results were what I was looking for. It removed the etching marks and polished out all the scratches. After finishing the whole car I sealed the car with some Daddy-o sealant from shinesupply. The car has only been washed twice since being corrected and stays garage kept but I have noticed that after being out in the summer sun a few times the etching marks are coming back!? This blows my mind and I`m puzzled. Which leads me to two questions:
1) why is it doing this?
2) how do I fix it!
 
Before you sealed it, after compounding/sanding it, did you check your work in the proper light. Logic tells me, you didn`t get all of the etching marks.
 
Yep. Been working on getting my pictures up for proof.
What I started out with


after sanding and polishing


etching starting to come back


 
That "After" picture, the 2nd one; does not look right.

Appears hazy as heck

Did you do a Test Spot?


The etching isn`t "coming back"...it was never removed

3000 grit is not very aggressive and likely didn`t get the job done


Buy or borrow a Paint Thickness Gauge

If there is enough CC left, hit it with 1500, Compound and properly Polish
 
Broham-

Did you neutralize the mineral deposits? AKA- Valu Guard ABC wash? If not, I recommend picking up some.

After the `ABC` wash... I would compound the area and if possible, leave unprotected out in daily sun so the paint will heat and cool with natural temperatures. See if it comes back after a few days. If it doesn`t, proceed with final polishing and protect. If it does- report back.

Best regards,
-Gabe
 
Dellinger said:
Broham-

Did you neutralize the mineral deposits? AKA- Valu Guard ABC wash? If not, I recommend picking up some...
Click to expand...

My thoughts exactly. Don`t want the [stuff that caused the etching] to keep dwelling in the pores/microfissures/etc. of the paint forever.
 
🤔 never heard of it but it makes sense. I will try to find some of this stuff and give it a try. I assume I will just need the acid neutralizer?
 
Broham said:
樂 never heard of it but it makes sense. I will try to find some of this stuff and give it a try. I assume I will just need the acid neutralizer?
Click to expand...

I dunno, don`t know what the contamination is. That does sound reasonable though.

If you`re just using that (the alkaline) step, you might look into the (infinitely nastier) FinishKare version (FK1119).
 
Just ordered the finish care product. I will decon it and repolish it and will post up the results afterwards. Thanks for all the input


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Broham- Hope it works out for you. I would *NOT* extend the dwell time in an attempt to "make sure it really works" and I *would* wear gloves and maybe even eye protection. I`m generally not very paranoid about detailing products, but that really is some nasty stuff and the guys who developed it would be the first to say so.
 
Thanks for the tip. I will stay strict to the directions. Really hope this solves my problem


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