the f1 stud button aka help button —

Founded the f1 stud button aka help button models & stl files for printing
Cowhorn Button
Helge Helgeson
Plain button
jenda15
Button with pokeball magnet
lagrenouilleemouvue
A Simple Button 20 mm
Zemba Craftworks
LOVE Buttons
Ostella3D
Laser Pointer Button Switch
Red Kraken Forge
Button Bot
MakerBot