In mechanical engineering, mechanism and machine are the important tools and we can use these in our daily life at everywhere. Everything is related with the movement of the mechanism and machine, so we can use the machine design for house as well as all mechanism designs for the lift, elevator and any other control system in the government office. I am just saying the example that we use them in the world. I am still learning how to modify the design for machine.
In my experience, I have learned 2D/3D drawing design for Steel Fabrication and installation drawings and estimations for hydroelectric power system.
Turbine drawings for hydraulic power projects are also my experience that I have learned in the engineering company. Drawing skill is quite essential to use for an engineering roll. We need the knowledge of the drawing and idea of the design.
For the machine design, we should learn about Engineering Thermodynamics, Engineering Materials and Engineering Software (CAD/CAM system software). I prefer to show all the sample of the mechanisms and machine that I have created in this web-site.