Updated for Dawntrail Expansion!
28 Different Action Mods for the Machinist Job in Final Fantasy XIV.
Each action is previewed here and list the type of adjustments made, which include...
Minimal FX: reduction in existing visual effects, to declutter the animation
New Effects: new or altered visual effects for the action
New Sound: new or altered audio effects for the action
New Motion: different skeletal animation, some are swapped from other actions, and others were modified using 3D Modeling software.
No Frames: has sound and visual but no skeletal movement (activates seamlessly with other actions)
All actions also come packaged so you can pick and choose what you like. You may have to switch jobs back and forth after you load them to get the skeletal animations updated.