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Car Care & Detailing
Get detailing answers and tips here

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Old 11-08-2013, 08:54 PM   #1
Taylor330
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Wet sanding (Bird $h!t) Through clearcoat?

Hi guys - long time lurker - first time poster.

I have some bird droppings on my boot,
I have all the tool necessary to wet sand and it's not my first time wetsanding (successfully removed a deep scratch from a Mazda 3 metallic after adding some paint over the exposed primer, and sanding it to match existing paint)

Does anyone know if I will need to wet sand this out?

Has anyone heard of the droppings etching through the clear coat?

If so, how likely am I to go through the clearcoat... I don't think I can fork out AUD$250 for a paint thickness gauge...

Any help much appreciated as I have a few hard water spots also to take care of over December (our summer - down under)

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Old 11-12-2013, 09:24 PM   #2
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Quote:
Originally Posted by Taylor330 View Post
Hi guys - long time lurker - first time poster.

I have some bird droppings on my boot,
I have all the tool necessary to wet sand and it's not my first time wetsanding (successfully removed a deep scratch from a Mazda 3 metallic after adding some paint over the exposed primer, and sanding it to match existing paint)

Does anyone know if I will need to wet sand this out?

Has anyone heard of the droppings etching through the clear coat?

If so, how likely am I to go through the clearcoat... I don't think I can fork out AUD$250 for a paint thickness gauge...

Any help much appreciated as I have a few hard water spots also to take care of over December (our summer - down under)

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Do you have a DA or rotary polisher? I assume so if you're planning on wetsanding. Anyways try polishing it out with a good cut compound like Meguirs M105 Factory clear coats are thin enough, try compounding first.
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Old 11-17-2013, 05:36 PM   #3
scrace
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Your paint look swirled, etched and oxidized.

I would advise compounding and polishing the entire car with a DA (dual action) polisher. If the car has never been polished before you don't have to worry about a paint thickness gauge (as long as you're using a DA) as the clear coat is still pretty thick (relatively speaking). If it's not a show car just go for a nice overall correction and don't chase any deep defects. As you remove paint you'll be leveling the surface, and as you get closer to the level of the deeper defects they won't appear as bad.

I suggest spending sometime on autogeekonline.net and learning about proper auto detailing or find someone in your area who is a quality detailer.

Goodluck
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Old 11-18-2013, 03:27 AM   #4
Taylor330
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Thanks guys,
I have a rotary buffer - i'm not happy with it.
My girlfriend is going to get me a random orbital buffer, some menzerna and some collinite 845 for my birthday in a couple weeks.
I'll be spending some time in December on it, want to get rid of the swirls and some hard water spots, get it glossy, and seal it with collinite 845.
I clay it about twice a year, and in spots when needed.
I am just a bit cautious about the etching - I have used auto glym paint renovator by hand, and it has not done a damn thing. (Put lots of effort into it)

Last edited by Taylor330; 11-18-2013 at 03:29 AM.
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Old 11-18-2013, 10:35 PM   #5
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Yeah buddy. Clay bar, compound, polish, wax. Should look really good. You can get all that at your local auto store and it's not hard to do.
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Old 11-18-2013, 10:49 PM   #6
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Wet sanding (Bird $h!t) Through clearcoat?

Hit it with a compound first. Spend a little time with that and it should get rid of it. I'll be surprised if it doesn't. But if it does not, wet sand. Don't be too aggressive with it. I think it'll come off pretty quick with some 3000 grit. Then, obviously, polish out.
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Old 11-21-2013, 03:49 PM   #7
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Work least aggressive and up to get the proper removal.
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Old 12-06-2013, 11:45 PM   #8
Taylor330
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Wet sanding (Bird $h!t) Through clearcoat?

Hi guys, got an update:

So, it was my birthday on Tuesday and I asked my girlfriend to get me a DAS6 Random Orbital buffer with a Menzerna starter pack - and she delivered on this
I was stoked.

So I didn't have time to do the whole car, nor go up to show-car shine through FG500, to SF4000 mirror finish - but I did have time to get rid of this spot, and a hard water spot which has come up over the last couple weeks.
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After a light hit with a small tear-off of 2500 grit wet n dry - it looked really bad. I was a little worried it went through the clear coat!
Alas,
After putting a Surbuf pad on and some Menzerna 500, this came right out - I did the top of the boot, and I don't have time to keep going elsewhere or go even finer with the 2500 polish - but I cannot find the etching spot!

It's gone!


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