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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wash, Wax, Detailing and Cosmetic protection/repairs > Help - Polish/Compounding Residue driving me crazy!



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      05-03-2015, 01:58 PM   #1
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Help - Polish/Compounding Residue driving me crazy!

Hi All,

I wonder if you guys have the same problem I do - I would get lots of residue when I compound my BSM E90 with my Porter-Cable. I just compounded my trunk lid today but I'll have to wash the whole car soon because of the residue which is everywhere. Plus, when I wipe off the compound, I would be prone to introducing scratches from the residues! They're driving me nuts! I use Optimum Hyper Compound. Do you guys have the same problem? I never go past speed 5 on my PC per Junkman's suggestion.

Please help!
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      05-03-2015, 02:21 PM   #2
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IMO ...Optimum Hyper Compound works better with a rotary than a DA.

Hyper Compound doesn't dust that much. It sounds like you worked the product a bit too long. You can use a damp MF towel to remove the compound.

There are several other factors as well...

How big is your work area?? Arm speed?? Pressure??? What speed did you use to spread the product????
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      05-03-2015, 03:51 PM   #3
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Thanks for your prompt response. So if I do things properly, there shouldn't be any residue at all? When I use their Hyper Polish, I wouldn't get as much residue.

My work area is quite small, half of a trunk lid at a time. Arm speed is medium, going across half the trunk lid in maybe 10-15 seconds. And I spread the product using speed 2 at the start.
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      05-03-2015, 04:33 PM   #4
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By the way I didn't work the product that long at all. I only did 3 passes, 50-50 overlapping passes alternating north-south with east-west... The residues are so bad especially because of the black color of the car...
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      05-03-2015, 07:51 PM   #5
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Like I said earlier, Hyper Compound works better with a rotary or a force rotation DA i.e Flex 3401.

Try this. Shrink your work area down about a third to 1.5' x 1.5' and go about 1.5 inch per sec. Use your machine as a guide. The porter cable machine is about 12 inches (give or take) in length. 2 small squirts of product should be enough. Spread the product by tapping the pad on the panel at several spots then run one pass on speed 4. Bump the speed up to 5 or 6 and see if you can run another 3 passes. Monitor the rotations on your backing plate to ensure the product is being engaged. If the product looks like it is drying up..squirt a small shot of water (a small shot) on the pad and continue.

By the way.... you are doing this indoor and out of the sun. right? Which pad are you using for compounding and how often do you switch it out for a fresh one???
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      05-16-2015, 01:59 PM   #6
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some compound dust more than others. I had the same problem with Meg's M105 when I mover to Mezerna FG 400 problem solved
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      06-15-2015, 02:39 PM   #7
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By "residue' are you referring to dust, or actual product sticking to the paint?

Every compound or polish will dust to some level. In general, cutting compounds tend to create much more dust than a fine finishing polish as you are removing much more material and therefore have more particles in the air as you're working. In some cases, it is necessary to wash the vehicle after compounding to remove dust buildup from the car and in all of the cracks & crevices. It is just part of the process in some cases.

If you are having residue sticking to the paint, it may simply be because you are using too much product, working it too long, working in too large of an area, or not cleaning your pads frequently. As psnt1ol mentioned, there are just many variables. Another rare, but possible solution is that your paint is just not cooperating with that compound. Some paint types tend to be stickier and wiping away residue is a chore with certain products.

The most common issue is that you're simply using too much product and generating too much heat during your working cycle. Try reducing the amount of product you use and perhaps making less passes for each cycle.


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      06-15-2015, 10:35 PM   #8
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u are using too much product

after each section u do, wipe the excess product/clearcoat/dirt off the pad and then move to next section, use a microfibre or thick terry cloth towel to do this

also your pads are probably dirty with dried product so u need to clean them with a pad cleaner and hot water after using so u get a perfectly clean pad to work with
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