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
Artisan box 6 hole
FrostBullKeycap
Bottom plate
BarBarBarbucha
Spheal
Nibennett1987
Trypophobia Ball
DandyAndy
Merkaba with Flat
dammitcoetzee
M0 Trinket Cover
Grimberg
Seeder  planting pin
psychologickyplot
Figurine stand
Noirvent