Use Permatex "Plastic Weld" it is a two part Cyranoacrylate/Epoxy that sets in about 3-5 min and reaches maximum strength in 12 hours - Bonds to the ABS & PVC plastics much better than regular epoxies or super glues.

 

I used some weaker loctite (272?) on some interior screws and the black ABS plastic that surrounded the screws (that I got some extra Loctite on) became EXTREMELY weak and brittle. It would just crumble in your fingers. It seemed to be some reaction between the loctite and the plastic.

-Max

 

Bad advice! Gorilla Glue is great for certain things like wood furniture joints, but if you've ever used it you realize it foams and spreads and is the stickiest, nastiest stuff on earth. You're guaranteed to get it everywhere if you try to use it for small detail work.

Great advice. Permatex makes several epoxies specific to the materials you need to bond. I like their 5 minute epoxy putty sticks. Just mash it up and form it. It is easily thick enough to hold parts in position while it sets, hard as a rock.

And JB Weld is otherwise pretty tough to beat for automotive applications

 

Zap or Super Glue mixed with Baking Soda forms and instant bond...watch your fingers, they could get stuck together. Just put baking soda on surface and the glue on the other surface as soon as they touch, they fuse. Also dont breath the gas that forms...it's cyanide. We used this technique in model making class when i did industrial design.

 

wow that is very intresting. how much baking soda do you need? just a thin film on one side? or do you have to pour it on?

 

I tried the JB Kwick a few months ago. Even in hot weather, it still felt very pliable and slightly tacky after a day of setting. I tested it on a couple pieces of ABS; they were thoroughly cleaned. It refused to bond directly to the plastic. Roughing the plastic didn't help much. Using more hardener didn't help, etc. It just took several days to harden enough to hold together. Maybe it was humid then... who knows.

The 2 part stuff I used to use for building model airplanes was great. You knew you were using way too much hardener when it got extremely hot! Typically you're supposed to use 1:1.