It’s infuriating when you’ve baked a cake and then can’t get it out of the tin (except with a chisel!).
A really good greasing will help when it comes to turning out a cake and for shaped tins such as a Bundt it’s important to get into every nook and cranny. Once baked the cake should be cooled a little in the tin before turning out (approx. 30 mins). This allows the structure of the cake to firm up so it doesn’t fall apart. It should then be turned out onto a serving plate or cooling rack and left to cool completely. Don’t leave it to cool fully in the Bundt tin otherwise it’ll never come out!