I, too, like Glenn used clear two part epoxy to repair a crack in a Dometic shelf. It was one of the horizontal slide in shelves, and the crack was in the middle up front, presumably from items bouncing up and down while traveling. Since it could be removed, I placed the shelf upside down and found a dowel that perfectly fit in the channel where the crack had occurred and cut it to the proper length. Next I mixed and put a layer of epoxy in the circular groove and put the dowel in place. The next day after it hardened I mixed a large amount of epoxy and put it on top of the dowel, enough to bring it up to the edges of the groove. The result was that the somewhat flimsy plastic shelf can no longer flex as the weakest side is now reinforced; the other three sides are supported by extensions on the internal refrigerator
surfaces. The epoxy has held up through heat when the refrigerator
is turned off and through cold when the refrigerator
is in use. In reality, we shouldn’t have to make this type of repair. Dometic (and other manufacturers) should provide more durable products.