U-POLStronghold 706 Smooth Hig Adhesion Body Filler for Plastics

Had some deep gouges in my vintage atv plastics. Replacements don't exist so i was trying all sorts of products. After many wasted hours with 2 part epoxies and shortstrand fillers i stumbled across this product. To my amazement it worked fantastically. Feathered out easily and builds quickly and evenly.

This filler works great. Had plenty of filler to do my enter buick bumper. Easy to sand down and shape. Put plenty of hardner and still gave me time to spread over thw cracks and imperfections. Great stuff! Make sure you have good ventilation.

Great for plastic bumper repair. Easy to sand and feather.Somewhat pricey but you get quite a bit so it will last a long time

Adhesion to SMC and plastic is tops. However, pinholes are awful with this body-filler and yes, I know how to mix and apply filler. Been doing it for 20 years and I'm platinum ICAR certified.The spreading is easy with decent fill but the sanding is just okay. It reminds me of an improved Kitty Hair. So, don't think you can "spot-In" your filler. You're best to re-coat entire are to sand flat.

I bought this to fit my srt8 bumper that got ripped by a hit and run driver. After I welded the bumper back together using bumper plastic weld. I used this filer to cover up the welds before prime and paint. The filter goes on plastic like bondo goes on metal. The filer is easy to sand and blends in nicely. After a year of having it on my bumper i have not notice any cracking and even after someone backed into me nothing happened to the filler. Can't tell that the bumper was ever ripped. Great product.

I received product that is 2 months away from the 2 year expiration date, which is a "Richard" move in this industry. However, the stuff seemed to work just fine. I applied it to a plastic bumper that I am refinishing. It spreads great, and is fairly easy to work with for what it is. I noticed a booger of 706 had accidentally dried on one of the "fin" features that run down the centerline of the bumper, which was hard to reach with sandpaper. I pried the dried glob off with a razor, and noticed that it took the paint off with it, indicating good adhesion.Besides the seller sending me 2 year old product, the other problem with this U-POL 706 is the super deep lid. Of all the cans of stinky product I've pried opened, this lid design is the worst. The lid is so deep, when you pry on one side, the other side sinks back down and re-seats, and vice versa. All the time, you're fighting the suction of the goo inside. After resorting to pliers to rip the silly lid off, the lid no longer fits into the deep draw so nicely, and I suppose the magic which makes the 706 work will soon escape. Also, the instructions (not included) found online are not very detailed, and contain cryptic "paint society" codes that are dubious at best to amateurs like me.For $50, I expected fresh product, and an seriously frustrating-free lid. In the end, it did the job very well. After wet sanding down the filled areas with 400 grit, and spotting the pinholes with glazing putty, the areas patched with the 706 were ready for primer.

Excellent! Great Adhesion,Filling, feather edging properties. Worth every penny! I used it to repair a urethane spoiler, after using plastic repair rod (F.F.), sanding with 80 grit. Next, applying U-pol Stronghold 706 for all the cosmetic repairs. Bonds tenaciously! After sanding with 80 grit, on down to finer 320 grit looks great for flexible primer. Check video on You tube.

Not happy. After several applications i still did not like the finish. I found the product too brittle less flexible I don't think it will hold up with time