A Practical Guide to Space-Time Engineering: Particle physics is a rapidly expanding and highly dynamic sphere of knowledge supporting a landscape of constantly changing hues. Experimental boundaries are being shifted with exciting reductions in uncertainty at a staggering pace. This text develops the Electro-Gravi-Magnetic (EGM) construct to define relationships between the distributions of mass-energy over space-time of fundamental particles. The correlation of EGM calculations for mass & "size" to experimental evidence is astonishing, to at least four orders of magnitude greater that can be physically measured. Most of the contents herein have been peer reviewed & published in scientific literature. For particle enthusiasts, this text is a must.