You are a designer, but not open machine tools, repair molds of the strength of the work, with men and women have nothing to do.
Non-standard equipment mainly need to learn the common mechanical structure and a variety of standard parts, mainly by experience, that is, work time, how many units of equipment, to improve the technology, and then look for the boss to ask for a high wage, but the threshold of the line bottom, will draw on the line, the general laborers can also learn.
It is recommended that you go to the medical equipment industry, because medical equipment is the need for theoretical calculations, you need to calculate the exact torque, inertia, life, etc. Many old engineers can only rely on experience, this motor force is not enough to change a big one, they will not be able to theoretical calculations, will not be able to simulate the movement, stress analysis.
I'm not a senior, I'm halfway to learn mechanical design, if I can choose from the new words, I will switch to IT, high wages?