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Cosmetic Maintenance (Wash, Wax, Detailing, Body Repairs) Wash, Wax, Details, Repairs


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Old 12-26-2021, 08:51 PM   #1
Silviacrazed
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What to use to fill in logo in ABS plastic?

This isn't 86 related since mine is dead. But I have a Cayman I am putting GT4 side scoops on. The scoops are made of ABS. What material should I use to fill in the GT4 logo on the scoops? I'll sand it down flush and then have them professionally wrapped.




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Old 12-26-2021, 09:59 PM   #2
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so the biggest problem with any plastic filling is going to be thermal expansion rate. if the filling material is any different, even parking the car in sunlight from time to time will thermally cycle the part enough to start to re-expose where the filler is.

it will likely help that the part is going to be wrapped over painted, but i suspect that it will still be an issue.

back when i built these tail lights(ABS rear assembly, polycarbonate lens, needed to cut the hole in the lens, and fill the gap between the 2), a body guy recommended evercoat fibertech for the big filling part, and then finish coat it with evercoat polyflex.



it did work, but after about 3 years of natural thermal cycling, i could see a slight gap in the paint.

the other option is jb weld plastic epoxy. i attempted that product on my louver build, but i'm not very happy with the results. in less than a year the thermal cycling has been enough to expose the work i did there through the paintwork
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Old 12-26-2021, 10:01 PM   #3
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I had considered the JB plastic weld. I'm also considering getting some abs plastic welding rods and heating them up into the logo and then sanding it down.


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Old 12-26-2021, 11:54 PM   #4
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It`s not 100% ABS for a start. If you sand the lettering and sand around it then a quality filler will fill it and feather out around it where you sanded . Some 2k primer applied correctly over it and it should last for ever. ABS plastics are hard to weld, I repaired plastics for 10 years JB make some good products also
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Old 12-28-2021, 09:47 AM   #5
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Perhaps you could grind it down with a dremel tool. Reshape the numbers/letters into an arrow shape or put a sticker or emblem over it.
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Old 12-30-2021, 09:42 PM   #6
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You'll need some R20 plastic welding rods.

PC(Polycarbonate) + ABS (Acrylonitrile Butadiene Styrene)


Polyvance is a good supplier and their product can be found even on amazon.


As shallow as that logo is, I'd just grind it with >50g until it was a feathered edge crater and use a plastic adhesion promoter and 2-part plastic repair from a company such as Pilo Grip. Get it close and then just work it like every other body panel.
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Old 01-07-2022, 12:57 PM   #7
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There's no reason why body filler and scratch putty/primer won't fill that in. Unless that piece sees significant bending/torsion it should be just fine and won't crack. Filling it in with epoxy, plastic or JB weld is overkill.
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Old 01-07-2022, 01:30 PM   #8
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