Plug that hole!

version 3 added chamfer option .. "yes" or "no"

Full customization in customizer or OpenSCAD

or scale the STL file to your own size

Typical parameters used

Overall_height=8; Fill_hole_size=13.4; Lip_diameter=19.4; Number_of_segments=5; Gap_between_segments=1.8; Diameter_overhang=1.9; segment_thickness=2.9; hole_diameter=0.;// hole in center 0= no hole base_thickness=1.2;