My Maserati does not do 185

S

Speedwagon

New member
Nor is it mine. But I am cleaning up a '67 Quattro-Porte. It has been repainted, and not that fantastically either. The owner repainted it before, and is currently working on getting it running(which is why it's up on stands). The entire car was covered in overspray from being in the shop pictured(it's a membership based shop, that has wood/metal/auto and such shops). At the owner's choosing, I wetsanded the entire car with 2000 grit to get the overspray off.



Played with the trunk a bit to figure out what the damage was.

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After some wetsanding to get the overspray off:

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Overspray on the windows:

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Overspray still on the front door, wetsanded and polished on the back door(I was using my new GG6 with a HF pad, and Meguiar's 83)

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Not too bad, though I know it could be better. Still learning how to use a DA. Though the owner is most pleased with the results(I am not).

It is a lot shinier than it was, but a tons of swirl marks now.

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I may revisit the car today, and see if I can't improve my DA technique.
 
the other pc said:
You tried to remove #2000 hand sanding scratch with M83 and a DA?
Click to expand...



Yes.



Though another guy at the shop took some of the 83, along with his rotary and a wool pad on a small section, and had much more success. But I have not well versed in a rotary, so I didn't want to risk burning through. Nor am I well versed in the various products yet, so I didn't want to go too aggressive and do more damage.
 
Forgot to get a picture when I was done the other day. Took one yesterday when the car was outside, but the sun was hiding.



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Improving my technique removed a lot more of the scratches. There are still some, but it looks a lot better.
 
On the one hand, it's generally a good idea to start with a less aggressive approach and work up to find what actually works.



On the other hand, diving into a wetsanding job without a lot more knowledge and planning is very risky.



And wetsanding to remove overspray is usually a bad idea since we have products like clay and Nanoskin available.





M83 isn't made to remove heavy sanding scratch. And #2000 by hand is very heavy scratch (especially if you weren't using highly uniform finishing abrasives). The major damage was already done before you picked up the buffer. Now your job is to mitigate it without making it worse.



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Meg's cutting scale places M83 at about about 6. The products they intend for sanding scratch removal generally weigh in over 9. And that's with a rotary.



To do it with a DA requires finer sanding scratch (like #3000 or finer by machine, which is finer than by hand), heavier compounds and aggressive pads (microfiber works faster than foam, but at least a foam compounding pad).



I'd highly recommend reading up on the many posts around here about sanding before having another whack at it.







pc
 
The wetsanding was not my idea. I trying clay, but that was having almost no effect. There was just too much overspray. The car was essentially painted in overspray. Wetsanding was suggested by the owner, and he was the first to touch the car with the sandpaper.



So I just did as he requested, as the goal was to make the car more presentable in a short amount of time. The overspray has been on the car for a few years, and he hasn't worked on the car hardly at all until now. Memorial day weekend Maserati club run and all... waiting until the last minute.



And yes, I wanted to get something that wasn't too aggressive, to start small, since I'm not experienced with cutting yet. I appreciate the info.



Bottom line here though, is that the owner of the vehicle is thrilled that his QP has a shine to it, even if it has small scratches in the paint. You'd have to see the driver's side to really understand though, as the paint on that side is pretty bad(he painted it in his garage, in a very short amount of time, and there are runs all down that side).
 
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