Residue on paint after polishing?

staro0989

New member
I just started detailing my Scion FRS today and I've run into an odd issue. I am using FG400 for compounding with an orange Buff and Shine mf pad then following up with PO85rd (I believe it is called SF4500 now?) on a black Buff and Shine mf pad. This worked great on my hood but my front bumper has a white residue on it after using PO85rd. There wasn't any residue after using FG400. I attempted to wipe it off with a clean mf towel with no luck of removing it. I can remove it by rubbing my finger on it which is odd. Has anyone else experienced this? What is the cause? Any help would be greatly appreciated!
 
I get it every once in a while with Sonax polishes, I usually just do a quick wash with ironx snow foam before I put my lsp on, not sure if it's the same thing you have, mine just leaves a weird white film that shows the path of the buffer.
 
I use Menzerna polishes exclusively and I'm familiar with this issue. It's a technique problem. Plastic panels don't dissipate heat very well so if you are polishing aggressively, even with SF4500 it can get hot enough to make the polish very waxy. It will leave a residue (that looks like a strike through) which is extremely difficult to wipe off. Just try not to bear down when polishing plastic panels and be more aware of the heat you are generating. Keeping your pad clean is also very important to prevent the issue.

- Patrick
 
I get it every once in a while with Sonax polishes, I usually just do a quick wash with ironx snow foam before I put my lsp on, not sure if it's the same thing you have, mine just leaves a weird white film that shows the path of the buffer.

I use Menzerna polishes exclusively and I'm familiar with this issue. It's a technique problem. Plastic panels don't dissipate heat very well so if you are polishing aggressively, even with SF4500 it can get hot enough to make the polish very waxy. It will leave a residue (that looks like a strike through) which is extremely difficult to wipe off. Just try not to bear down when polishing plastic panels and be more aware of the heat you are generating.

- Patrick

Thank you both for your response. I think you are correct Patrick in regards to polishing too aggressively. Do you recommend a wash as top189h recommended? Or how else can I remove the residue?
 
Thank you both for your response. I think you are correct Patrick in regards to polishing too aggressively. Do you recommend a wash as top189h recommended? Or how else can I remove the residue?

Best way to remove the residue is to let the surface cool completely and then very lightly go back over the affected area with SF4500. I personally don't use 4500 very much and definitely not right after FG400. I really favor the SF4000 because it has a little more corrective ability, finishes down just as nice and doesn't hide problems like 4500. Menzerna insists that 4500 doesn't have fillers but I have run into bonding issues after using 4500 even with multiple Dawn washes and Eraser wipedowns. Give it a try sometime!

EDIT: I just noticed that you are using a MF pad for the finishing. On plastics MF pads will definitely build up much more heat than foam pads if you aren't careful. Also, it's unusual to use such a fine finishing polish with a MF pad. Most would agree that final polish with something as fine as 4000 or 4500 should be done with a foam finishing pad. Let me know if you have any questions.

- Patrick
 
Best way to remove the residue is to let the surface cool completely and then very lightly go back over the affected area with SF4500. I personally don't use 4500 very much and definitely not right after FG400. I really favor the SF4000 because it has a little more corrective ability, finishes down just as nice and doesn't hide problems like 4500. Menzerna insists that 4500 doesn't have fillers but I have run into bonding issues after using 4500 even with multiple Dawn washes and Eraser wipedowns. Give it a try sometime!

EDIT: I just noticed that you are using a MF pad for the finishing. On plastics MF pads will definitely build up much more heat than foam pads if you aren't careful. Also, it's unusual to use such a fine finishing polish with a MF pad. Most would agree that final polish with something as fine as 4000 or 4500 should be done with a foam finishing pad. Let me know if you have any questions.

- Patrick

Thank you for the response. I have some finish foam pads to us with 4500. I'll give that a shot.
 
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