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Machine Polishing Need help with Machine polishing

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Old 04-07-2017, 10:53 AM   #1
E60525d
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First time with a DA!

I bought an almost new DAS6 pro off a forum member a few weeks ago and over the past few weeks I have buying plenty of detailing stuff. Most of the items have been on a budget as I didn't want to spend £100's and then realise that I cannot do paint correction!

In summary i got the following items;

DAS6 pro with Dodo orange and green pad - £85
Serious performance MF cutting and polishing pads - £18
Tardis 1L - £8
IPA 1L - £6
Clay cloth - £10
MF cloths - £10
3M 3434 tape - £10
Triple qx iron fallout remover - £6
Menzerna polish's - Already had

So not a hugely expensive kit. But luckily I already had Menzerna polish's which I bought quite a few years ago but never got round using them.

I also bought a scrap VW Polo bonnet for £10 to try it on first.

So I masked up an area to test. This is what I was dealing with;





Apologies for the pictures as I was using my cheap torch. Currently waiting for a proper one that I have ordered.

The bonnet was covered in swirls and RDS.

I first tried Menz Final Finish with a cutting pad. Being VW paint, I didnt think a finishing pad would be strong enough. So steps were;

Spread on speed 1
Speed 4.5 and several slow passes
At this stage polish started to become clear so 1 spray of QD on pad and repeated steps above.

So results, I was quite surprised on how much defects the final finish removed. Most of the light stuff and medium was gone but deeper swirls were still there. I then changed to Menz Intensive Polish and tried again.

This was much much better, I got rid of pretty much all the swirls. Not 100% perfect but more than good enough for me.





The 50/50 shots say it all

Next step is to refine my technique and also try to remove the RDS. I will go at these again with a 4" cutting pad Menz Intensive polish.

So next steps is waiting for my LED light and PTG to arrive.

In conclusion, I have learnt that it is quite straight forward if you follow the various guides and no where near dangerous as some people might say!

Any feedback/tips?

Last edited by E60525d; 09-07-2017 at 11:52 AM.
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Old 04-07-2017, 02:59 PM   #2
MBRuss
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Great stuff! I'm also about to machine polish my car for the first time later this week. I've slowly been amassing polishing equipment for months, but having recently had our first child and moved house I've not had time to use any of it yet.

I also have a VW, so I'm also expecting hard paint, but we'll see.

Good work, anyway - looks much better.
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Old 04-07-2017, 04:24 PM   #3
E60525d
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Thanks.

Overall I was quite surprised on how straight forward it was. Also its very encouraging when you start seeing the results.
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Old 04-07-2017, 11:47 PM   #4
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Great work buddy
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Old 05-07-2017, 10:17 AM   #5
E60525d
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Quote:
Originally Posted by bencossie25 View Post
Great work buddy
Thanks. Next step is to go at the heavy defects.
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Old 09-07-2017, 11:46 AM   #6
E60525d
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So next step was to go at the heavy marks and defects on the scrap VW bonnet.

I asked a question on what is best for heavy marks, wet sanding or heavy compounding. I decided to find out myself!

So this was the defect I was up against;



So using my DAS6 pro and a 4" MF cutting pad with Menz Intensive polish I went for it. After several passes it did make an improvement.



Not huge but definitely better.

But at this stage I decided to stop as I felt the panel getting warm and didnt feel comfortable carrying on and therefore a little frustrated that the defect was gone.

So next step was to wet sanding. I found a couple more marks on the bonnet, one was heavy and the other was medium.

Heavy mark



Medium mark



On the heavy mark I started with 1500 wet & dry, then 2000 and finished with 3000.

The medium mark I started with 2000 and then 3000.

After wet sanding


It looks pretty grim TBH.

But after a pass with Menz the sanding marks were completely gone a long with the defects.



I was amazed on how quickly it took to polish out the wet sanding marks. And best of all the defects were gone.

Remember the first defect that I couldn't get out by compounding. A quick go with 2000 grit and that was also gone!!




So overall I am very pleased with the results you can get with wet sanding.

One unknown is that I have no idea how much clearcoat I have removed. I have ordered a PTG so next I time will take before and after measurements.

A few things worth noting for next time;

- Hopefully my PTG will arrive for before and after measurement
- Try to wet sand only the defect. I noticed I sanded an area which was larger than the defect. I may mask around the defect next time.
- Try lower grit papers. I think 2000 on the heavier mark may of been enough.
- Fill stonechips with paint and try to wet sand repair.
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Old 12-07-2017, 12:08 PM   #7
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Surprised no one has replied, any views on this?
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Old 12-07-2017, 09:19 PM   #8
neilmcl
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Here's a recent vid I found quite interesting regarding wet sanding:

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Old 24-07-2017, 01:31 PM   #9
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A further update, so i took the plunge and tried the DAS6 on our VW Scirocco. Took 2 days in total but the transformation is huge.

All swirls, marks and deep scratches are gone! I did have to wet sand a couple of deep scratches but it worked really well. I was surprised how much correction can be done.

In the past, I would of thought that you have to touch up deep scratches, but any more, they can easily come out with a DA.

No before pics, but I will upload some after pics later.

Also worth mentioning the cost. In total the DA and products came to around £200. Considering I should be able to do around 3 to 4 cars, its an absolute bargain!
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Old 24-07-2017, 01:59 PM   #10
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Hey. Nice thread. Enjoyed reading and seeing that.

The only thing that struck me with my own limited experience is that you'll need to be wary that you don't know how much lacquer you've taken off your VW as you havent posted anything about measuring paint depths. Fair enough as you've done a greta job on a budget, but worth remembering so that you dont carry on polishing every few months and find yourself in need of a respray if you burn through all the clear coat. Also worth sealing with some wax for a few months protection!
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