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Machine Polishing Need help with Machine polishing

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Old 08-10-2017, 03:40 PM   #1
Benfr16
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Wash induced marring?

So I have posted a number of times now asking for help with my black seat ibiza.

I have tried many different methods to remove swirls from my paint and have generally improved the finish.

After the initial correction it looked great but after washing for the first time, I could see very fine marring in the paint and came and asked for help. I had overlooked the importance of IPA wipe so I bought IPA and tried again but had little success in improving the paint further. I won't type up everything I have done as its quite long but essentially I think my paint is soft as I had a go on my drivers side door with Menz 3500 and a white pad. Following 100% IPA wipedown, the paint looked great. I sealed it with autoallure toughseal. I've been keeping my eye out all week and haven't noticed any imperfections in the paint apart from a small area I may have missed right at the bottom of the door.

Heres an image prior to sealing:


And a quick inspection showing no swirls:

Today I have washed the car with clean equipment and a 2 bucket method + grit guard. (Shampoo - AG Body conditioner). It now appears that the same marring has returned to some extent.

This is from today:


Vid from today showing the same door with imperfections:

Just for evidence that my equipment isn't dodgey, here is a pic of my lower body wash mitt and drying towels.






My wash process involves fully soaking the car with a hose, using a 2BM to wash the top half first, then the bottom half. I dry with blotting with a waffle weave and collect any missed areas with a microfibre towel.

I'm almost at the point of giving up on trying to sort it out! I know black cars are notorious but I just seem to go round in circles with this issue! I think its wash related based on the direction and length of the marring (appears to be similar to the direction and length of a swipe I would take with the wash mitt).

Any ideas on how this issue could be solved would be great! Thanks

Last edited by Benfr16; 08-10-2017 at 04:02 PM.
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Old 08-10-2017, 03:53 PM   #2
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My wash process involves fully soaking the car with a hose, washing the top half first, then the bottom half using a 2BM. I dry with blotting with a waffle weave and collect any missed areas with a microfibre towel.
Quick question, you say you wash the lower half of the car 2BM, do you not wash the whole thing 2BM, if so at what point of the lower half are you using your second bucket?
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Old 08-10-2017, 04:00 PM   #3
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Yes sorry for not making that clear. The whole car 2BM. Image of mitt used on lower half of vehicle.
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Old 08-10-2017, 04:07 PM   #4
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The images are after use of these products today as well. They don't appear to be particularly dirty.
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Old 08-10-2017, 04:12 PM   #5
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have to admit they appear to be clean enough, do they go through the washing machine before you use each time?

How dirty was the car and any use of snow foam or pre wash?
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Old 08-10-2017, 04:22 PM   #6
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have to admit they appear to be clean enough, do they go through the washing machine before you use each time?

How dirty was the car and any use of snow foam or pre wash?
The car wasn't too bad. It has done 250 miles max this week and it hasn't really rained too bad while I've been on the road. Just standard thin film of dirt.

Regarding the washing between each car clean, I would be a liar if I said I ALWAYS wash them between. But I had washed them all prior to this wash as I wanted to rule out as many factors if the marring returned. I wash with non bio gel tab and white vinegar in the softener section of the drawer.

I don't use any snow foams or pre washes. My hopes were that an initial correction then a good wash once weekly would be a cost effective way to keep car in good shape but as most, the costs keep creeping up!

In terms of shampoo, I think the AG shampoo suggests two caps and I tend to use roughly 3 - one in bottom of bucket, one on the mitt and one inside the mitt. I tend to do a bit more than a cap for each of these as I just squirt it instead of dosing with the cap.

Last edited by Benfr16; 08-10-2017 at 07:28 PM.
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Old 08-10-2017, 05:15 PM   #7
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The car wasn't too bad. It has done 250 miles max this week and it hasn't really rained too bad while I've been on the road. Just standard thin film of dirt.

Regarding the washing between each car clean, I would be a liar if I said I ALWAYS wash them between. But I had washed them all prior to this wash as I wanted to rule out as many factors if the marring returned. I wash with non bio gel tan and white vinegar in the softener section of the drawer.

I don't use any snow foams or pre washes. My hopes were that an initial correction then a good wash once weekly would be a cost effective way to keep car in good shape but as most, the costs keep creeping up!

In terms of shampoo, I think the AG shampoo suggests two caps and I tend to use roughly 3 - one in bottom of bucket, one on the mitt and one inside the mitt. I tend to do a bit more than a cap for each of these as I just squirt it instead of dosing with the cap.
Hmm, running low on ideas, as you say the fact you washed all the mitts and cloths before washing eliminates the risk here so it would seem. Your using enough shampoo by sounds of it. on the sides of the car are the panels staying wet keeping any remaining dirt soft by time you get round to it? just thinking using a hose doesn't always remove as much muck as a power washer would.
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Old 08-10-2017, 05:59 PM   #8
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How about trying to reduce the marring by foaming via a lance. I have the same problem with BMW paint. Just can't seem to not marr the bloody thing and feel that my technique is good. I've started to foam and pressure wash off to try and sort this as I am a perfectionist.
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Old 08-10-2017, 09:33 PM   #9
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I use a modified 2BM wash after a prewash soak and rinse.
When first introduced to DW and the 2BM wash I was amazed by the grit in the rinse bucket and was immediately a follower of the teachings on the forum.

I now use 2 mitts.
Shampoo bucket mitt only ever goes in the clean shampoo and is held in my left hand.
This gradually applies a constant flow of clean shampoo over an area while the rinse bucket mitt on my right hand does the actual gentle bodywork passes.
After the shampoo runs out on the shampoo mitt, it dips into the shampoo bucket while the rinse/wash mitt goes in the rinse bucket nd I wash the next section.
End result is the amount of grit left in the rinse bucket is more than halved!

My thinking is to wash grit off the paint as gently as you would wash grit outta YOUR EYE.
You'd instinctively wash your eye under running water.
The above method is as close as I can practically get to that.
Give it a go. It's easy and free
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Old 09-10-2017, 07:58 AM   #10
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Quote:
Originally Posted by Benfr16 View Post
I don't use any snow foams or pre washes. My hopes were that an initial correction then a good wash once weekly would be a cost effective way to keep car in good shape but as most, the costs keep creeping up!
I think the lack of a pre-wash is a big part of the problem. Just wetting the car with a hose will still leave fine dirt particles on the paint. Good news is that this is not an expensive thing to sort. Get yourself some Bilt Hamber Auto Foam (£17) and a pump sprayer (~£15). Make up a 4% solution of the Auto Foam in the sprayer, apply liberally to the whole car. Leave for five minutes and rinse off thoroughly, ideally with a pressure washer, but a hose will do the job. Then proceed with your 2BM.
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