I want to bond glass to polypropylene. Does this work? If not any good epoxy that works for this?

I did not know if the plastic bonder would stick to glass, so I tried it on some empty glass jars and old prescription pill bottles which were made of Polypropylene, (type 5 plastic). I cleaned and sanded both the plastic bottles and the glass jars. I applied the JB Weld Plastic Bonder to one sample and also tried PC-11 Marine Power Epoxy Paste on another, (the jars and bottles were put together bottom to bottom). After they had cured I tried to pull them apart. Both the Plastic Bonder and the Epoxy Paste held with light pulls and twists. Both came apart with a medium/heavy pull. Both the Plastic Bonder and the Epoxy Paste stuck tenaciously to the glass jar, and came off cleanly from the plastic bottle. So it does stick to glass rather well, while holding, but not bonding to the Polypropylene bottle. I would try some on your particular application, (a sample), and see if the medium holding power to the Polypropylene will work for you. The Plastic Bonder was much easier to mix and apply than the Epoxy Paste. The Plastic Bonder cured in about two hours while it took 24 hours for the Epoxy Paste to cure. Both had about the same results as far as the holding power, but the Plastic Bonder when mixed is like a gel, while the Epoxy is a much thicker paste, which means you could use it to fill gaps and holes. It was easy to file/sand the Plastic Bonder after it had cured, the Epoxy Paste could be worked after it had cured, but it was much harder to do so.

Will this work on hdpe?

I used this on a PVC job and it worked well for that, but I mixed it on a plastic lid that was HDPE (#2 recyclable) before applying it. There was some left on the lid, and after it dried, it pealed right off the lid, so I'm not too sure about using this on HDPE.

Can this be used to fix a small crack in a dashboard?

Yes! I used it to repair the vacuum

They have one for metal but this is for plastic.

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🔧 Bond with Confidence—Your Go-To for DIY Repairs!

MADE IN THE USA - Trust in quality craftsmanship with every application.
VERSATILE APPLICATIONS - Perfect for plastics, ceramics, and more—fix anything from bumpers to crafts.
QUICK RELIABLE REPAIRS - Transform your DIY projects with a bond that sets in just 15 minutes!
DURABLE IMPACT RESISTANT - Enjoy long-lasting results that withstand the test of time and impact.
USER FRIENDLY SYRINGE DESIGN - Mix and apply with precision, thanks to the innovative syringe packaging.

The J-B Weld 50133 Plastic Bonder is a versatile, two-part urethane adhesive designed for quick-setting and strong bonding on various plastic surfaces. With a tensile strength of 3770 PSI, it is ideal for both household and automotive repairs. The user-friendly syringe allows for easy mixing and application, making it a must-have for any DIY enthusiast.

المواصفات

Brand	J-B Weld
Specific Uses For Product	Craft, Household Repairs, Auto Repairs
Material	epoxy
Compatible Material	Ceramic, Plastic, Concrete, Carbon
Item Form	Syringe
Special Feature	Fast Drying, Impact Resistant, Strong
Color	Tan
Item Package Quantity	1
Package Information	Syringe
Item Volume	25 Milliliters
Full Cure Time	30 Minutes
Water Resistance Level	Not Water Resistant
Tensile Strength	3770 PSI
Manufacturer	J-B Weld
Model	50133
Item Weight	1.6 ounces
Product Dimensions	1.4 x 4.4 x 8.8 inches
Country of Origin	USA
Item model number	50133
Is Discontinued By Manufacturer	No
Exterior	Painted
Manufacturer Part Number	50133
Special Features	Fast Drying, Impact Resistant, Strong
Lift Type	....