Ducky's Dad
Explorer
According to the stat sheet from innerduct it’s not all that strong but plenty strong for most applications. https://www.innerduct.com/hdpe-glue.
That's why screws are a good idea if you are going to mount hardware onto the Trex (or whatever) blocks inside the box. Screws from the outside into the back of the blocks will help keep them from coming loose offroad.
If you are glueing plastics it does help to heat it up first, scruff it up good and clamp.
With plastics, I always scrub with acetone, whether I'm gluing or just painting. Plastics have plasticizers in them, and those substances will often create a surface film that interferes with any kind of chemical or solvent bond. If you sand or scuff some plastics without cleaning, you just spread the stuff around.
That's why screws are a good idea if you are going to mount hardware onto the Trex (or whatever) blocks inside the box. Screws from the outside into the back of the blocks will help keep them from coming loose offroad.
If you are glueing plastics it does help to heat it up first, scruff it up good and clamp.
With plastics, I always scrub with acetone, whether I'm gluing or just painting. Plastics have plasticizers in them, and those substances will often create a surface film that interferes with any kind of chemical or solvent bond. If you sand or scuff some plastics without cleaning, you just spread the stuff around.