Author name: GOVIND SUTHAR

Understand surface roughness Ra, how surface finish is specified on engineering drawings and how machining processes affect achievable finish.

Understand practical shaft key design checks including torque transmission, key dimensions, shear, crushing and shaft geometry.

Learn practical injection moulding design checks including wall thickness, draft, ribs, bosses, parting lines and sink marks.

Improve SolidWorks models with practical sketch habits covering constraints, references, dimensions, symmetry and feature planning.

Understand why sharp corners increase stress concentration and how fillets, geometry changes and FEA can improve mechanical part design.

A practical guide to bearing datasheets covering load ratings, speed limits, dimensions, clearance, seals and selection information.

Avoid common sheet metal design mistakes involving bends, holes, reliefs, tolerances and assembly that create production delays and rework.

Learn how to choose primary, secondary and tertiary datums for mechanical drawings and GD&T without overcomplicating the design.

Understand tolerance stack-up with a simple mechanical assembly example and learn when worst-case and statistical approaches are useful.

Learn a practical method for selecting bolts, screws, nuts and washers based on load, material, access, environment and service requirements.