About this 3D model

Simple replacement lens cap for various monoculars, spotting scopes or other devices. Friend asked for a bunch of different versions so I thought making an OpenSCAD version to make it easier. Feels quite sturdy and impossible to lose accidently. Prints quickly flat on the bed, no (serious) overhangs / support or otherwise tricky elements. Enjoy and always happy for feedback - its my first customizable OpenSCAD project. Following parameters can be adjusted: Diameter of attachment ring Length of the lanyard Diameter of the eyecup cap Height of the eyecup cap Slope of the eyecup cap sides