Single File 3D Model
If your 3D model is printed as one piece, you can upload it as a single file.
Multiple Files of the 3D Model
If your 3D model is a kit which consists of several parts, you can upload all the files by adding or dragging them into the upload window.
Duplicate Files of the 3D Model
If your 3D model is a kit which consists of duplicate parts, upload only one file for the duplicate parts and set the quantity required for the kit.