Hi, This is my castle. I have created a few versions. The one that you could use for building a sand castle the "sand castle mark 2.1 and 2.2" ist is separated in two pieces so it is more easy to print (the tower is taken in a second part). Also you can print walls and towers etc. All parts can be used individually. The "castle mark 1 and 2" are not for building a sand castle with them but can be used as prop. I didn't had the chance to test print the parts since i don't own an 3d printer.