Cube Shape Soap Bubbles with pipe Cleaners and corners

I teach STEM Classes. One of our experiments is making Cube Shaped Bubbles using pipe cleaners and 3d printed corners. By dipping the cube in a bucket of soap solution (dish soap and water), the surface tension caused by the pipe cleaners create panels, making a square in the center. (Students must hold the cube by one corner, and lift the corner out first to make the square.) Then the students take a straw, dip it in the soap solution, then touch the tip of the straw to the square. By blowing GENTLY the student can create a cube shape soap bubble.