Does JB stick to plastic?

xjwmx

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I'm ordering a replacement battery latch for my laptop and I want to reinforce a place on it so it doesn't break like the original one. That place is too thin to support the battery weight. I need to fill the inside a '7' shape that's molded in the plastic so that the top of the 7 doesn't break off. JB Weld might do the trick if it sticks to plastic. Not sure what kind of plastic I have.
 
for plastic it can be tricky.
I like to use Tru-Bond PB Gel for plastic.
The Tru-Bondâ„¢ Plastic Bonding Series of products provide UV/Visible light cured bonds to a wide range of plastics including ABS, polycarbonate, PET, PETG, flexible vinyls, urethanes and acrylics. The adhesive creates a flexible resilient polymer with outstanding impact resistance and flex. These products can also cure through most translucent substrates and UV blocked plastics.

Its made by devcon who makes many name brand products like locktite.
they make really good epoxies too.
 
JB and slick plastic surfaces have never held for me.
But if I rough up the surface it has worked on a few things.
 
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