about modeling method of counterbore hole on the bottom side —

Founded about modeling method of counterbore hole on the bottom side models & stl files for printing
Simple Ring
KOBALT3D
ATST
Slicer11221
Empire Chest
Sh4d0wFl4r3
Yoyo Te Fiti heart
lolo_aguirre
Model S Middle console
IsmaeelMotiwala
dwe7485 Miter slot
blerghcity