Comments about 3M 3M Scotch-Weld EPX Plus II 10:1 Mixing Nozzle:
As an engineer, I did a bit of research on bonding polypropylene, even going to pH D friend from 3M. The 3M gun was well designed and easy to use. 150-grit prep, alcohol wash, and then glue. Also used fiber glass cloth to reinforce some areas (not pretty, but tough) and the results were great. Highly recommend the Scotch Weld 8005 for hard-to bond products.