Im making some removable round port units and need a really strong bond becuase a few of the ports will stick out of the box depending on tuning frequency. the port will probably be bumped around a little in my trunk. i know i should rough up the plastic with some coarse sp where its being glued. thought about makking up some small gussets if needed? it cant be supported on the inside of the box becuase they are interchangable .
thanks for any help