I have a small Samsung fridge that developed several cracks in the shelves on the door. After a while the cracks spread and one of the shelves became unusable. We couldn’t seem to buy a spare. This was really annoying. I felt like Samsung was telling me to buy a new fridge! So I tried gluing it with epoxy, that lasted a few days then broke. I tried gluing again, this time with reinforcing plastic strips along the cracks. That also only lasted a few days.
Then while rummaging through the garage one day I found this fabric backed tape that I had bought from an auto store to patch up some rips in the upholstery of my Electric Car. So I tried that on the fridge shelf. It’s not pretty but has worked well now for over a month. The shelf feels more robust than ever.