What a beautiful design. It printed perfectly, worked right out of the box without any modifications, everything fits together nicely. I printed it in pink for my daughter who has to care one of these things around all the time. She never normally uses a spacer because it doesn't it fit in her pocket like the inhaler does. This is awesome. Thank you so much for the design. When people tell me that 3D printers are a toy made for making other toys this is the kind of item I like to as an example of how 3D printers can make the world a better place.