Changed my mind about using filler on plastic bumpers after watching a YouTube video

I used to think filler was a waste of time on plastic bumpers, always went straight to sanding and painting. Then I saw a video from a guy in Texas who tested adhesion on a cracked bumper with and without flexible filler. He showed how the filler actually flexes with the plastic and prevents cracking later on. I tried it on a 2018 Honda Civic bumper last Tuesday and the finish came out way smoother than my usual method. Has anyone else had better luck using flexible filler on plastic parts?

3 comments

3 Comments

annas871mo ago

Honestly, that Texas guy's video changed my whole approach too. I did my girlfriend's 2019 Corolla bumper with flexible filler and it turned out way better than when I used regular stuff on my old car. The finish stayed smooth and no cracks showed up even after a few months of daily driving.

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phoenix_thompson429d ago

Dude yes! @annas87 my buddy used that same stuff on his Mazda and it held up way better than mine.

hunt.quinn1mo agoTop Commenter

Whoa, wait... I gotta disagree. Flexible filler has always peeled off on me in the heat, I'd rather just use the regular stuff and keep it thin.