This is a Propeller Wall Art. Not scale; it is modified to have slightly smaller props than scale to take up less wall space. The diameter when complete is 35". The Cowling has a diameter of 17". All the parts fit together easily. Use medium CA or super glue to attach all the parts together. It is easy to hang on the wall with the included wall mount. Use drywall anchors to attach wall mount to wall with level. Use a screw to attach the spinner to wall mount. I include a PDF file showing how to assemble the cowling. I include two cowlings; one that is printed in 3 sections that needs at least a 300mmx300mm build plate this cowling with hide the seams behind the Propeller blades. I also include a 6 part cowling that allows you to print on an ender 3. The tallest part is the spinner at 185mm. A 200x200x200 build plate. 3D PRINTING SETTINGS: I printed all the parts with 3 walls and 10% infill.