Plastic glue
Just repaired the grill on the fish this week. Had a crack about about three inches long, (sorry Adam), on the inside radius of one corner.
I embeded, from behind, a small strip of sheet metal into a two part plastic epoxy mixture, then filled the crack with same the next day.
Finished it off with a bit of body filler...looks perfect.
Then I masked off both grills...started applying my Argent Silver... the paint all bubbled and cracked. :evil: It must have reacted with a different paint type from underneath. Spent all this week getting them down to the plastic again. Now they look terrific! :D
Didn't mean to ramble...but if you reinforce the thab some how, it should hold...don't think gluing the joint alone will do much.
Hope you had better luck tha I did.