About this 3D model

My father had the idea of using old floppies together with the storage cases to categorize SD cards. I went designing the holder and this is what came out. All holders are pretty much untested or need refinement, but V2 works quite well (V3 hasn't finished printing yet.) V1 and V2 need the extra pocket, but can be printed laying flat. V3 needs to be printed with support material or upside-down like the file provided. Version history: V1: Proof-of-concept, initial version V2: Modified V1 to use less material and print faster V3: Redesign to be printable in one piece