This safety item offers some protection from injury against hard 90 degree edge corners. It's particularly useful when small children are around. Most other designs had the sphere protrude too far out, so I brought it in to a minimum to almost where the corner would otherwise be.  
Dimensions:  
Total item size: 4cm x 4cm x 4cm
Sphere diameter: 3.5 cm
Covers 3 cm on each axis from start of corner  
Print Instructions are included if you think you might have trouble printing this item.