Mechanics & Machines

From magnetism to rotation: the complete physics behind electric motors — covering DC, AC induction, Lorentz force, and industrial motor types

From Pascal's principle to hydraulic presses: how fluids multiply force and move the heaviest industrial machines

How gears transmit force and change speed — types, reduction ratios, and selecting the right gearbox for the machine

Bearing types and selection criteria — lubrication schedules, greases, oils, and early failure indicators

How compressed air becomes motion — compressors, cylinders, directional valves, and pneumatic circuit diagrams

Centrifugal, gear, and diaphragm pumps — how to select the right pump and calculate compressor sizing for your application

MIG, TIG, and stick welding — choosing the right method, safety procedures, and weld quality inspection

Conveyor types and material handling system design — from flat belt to screw conveyor and bucket elevator

How to read vibration spectra and identify fault sources — imbalance, misalignment, and bearing defects

Static and rotary seal types — O-rings, mechanical seals, and how they prevent fluid and gas leaks

How CNC machines work — axes, G-Code, feed rate, and spindle speed — from CAD design to finished part

Industrial robot types and degrees of freedom — applications from welding to packaging, programming, and safety standards

From rapid prototyping to end-use parts — FDM, SLA, SLS technologies and their factory applications