Gears
Gears (or cogwheels) modelled in Blender 2.78 using hard surface modeling techniques.
I upload also a few screenshots with shortened creating process of a one gear.
Publication date: May 2nd 2018.
Different kinds of gears.
A gear with 50 teeth.
Model same as above, but with other bevel settings.
First thing is creating a cylinder which contains 2 times more faces than teeth (in this case 100 faces)
Selection of faces which will be a basis of teeth. The best way to do this is using "Face select" setting and later "checker deselect" to select every secound face.
Scaling up basis of teeth using "Pivot center of rotation/scaling: Individual Origins" setting without scalling in Z axis.
Process of extruding teeth.
Scaling a cogs' endings.
Creating a hub and arms. Selection of edges which will be beveled.
Beveled edges. I use a "Bevel" and "Subdivision surface" modifier to create gears. Bevels made during modeliing (shortcut Ctrl+B) allows to sharp the selected edges.