About this 3D model

Ugrinsky Vertical Axis Wind Turbine (VAWT). You need a couple of small bearings MR52 (D = 5mm, d = 2mm, AliExpress ) Insert a small piece of standard 1.75mm filament at the top and the bottom to keep turbine at the place. So you will be able to remove easily turbine from holder. To make big designs more stable it's better to pull filament throughout (from the top to the bottom) and fix it with glue or melting.