How do you create a tolerance loop diagram and perform a 1D stack-up analysis for a multi-component assembly?

Creating a tolerance loop involves: 1) Identify the critical gap or assembly requirement (closing dimension), 2) Draw a chain of dimensions from one side to the other through all contributing features, 3) Assign positive direction (increasing gap) and negative direction (decreasing gap) to each dimension, 4) List all nominal dimensions and tolerances with their signs, 5) Calculate nominal gap as the algebraic sum, 6) For worst-case, sum all tolerances; for RSS, take square root of sum of squared tolerances. Include process capabilities (Cp/Cpk) for statistical analysis.