This From Sketch To Production eBook from 3D-LABS is written for engineers and students who want a clear, practical reference they can apply immediately.
From Sketch to Production — Mechanical Design in Practice covers the complete mechanical product development workflow from concept sketching through parametric 3D modelling, engineering drawing production to IS 696/SP 46, tolerance stack-up analysis, material selection, DFM review, and production handoff documentation. Written for mechanical design engineers and product developers in Indian manufacturing.
What standards does this book reference?
IS 696:1972 (engineering drawing India), SP 46:2003 (Indian drawing practice for limits, fits, surface finish, welding symbols), ASME Y14.5-2018 (GD&T), IS 919 Parts 1-2 (limits and fits), and ISO 286-1:2010 (fundamental tolerances IT01 to IT18).
What tolerance stack-up analysis method is used?
Worst-case linear stack-up: gap G = nominal minus sum of tolerances. RSS (statistical): sigma_gap = sqrt(sum of (t_i/3)^2 for n components). For 6-sigma stack: total = 1.5-sigma shift plus 4.5-sigma component spread. Clearance C = nominal minus 3 times sigma_gap (99.7% success rate).
What Indian drawing standards are covered?
IS 696:1972 first-angle projection method (Indian standard), line types (visible 0.5 mm, hidden 0.35 mm dashed, dimension 0.25 mm), lettering 3.5 mm minimum for A3 drawings, section hatching 45 degrees at 3 mm. SP 46:2003: H7/g6 preferred fit tables, Ra surface finish symbols in micrometres, and welding symbols per IS 813:1991.
How do I access this book after purchase?
eBook PDF: Instant download via email and 3D-LABS dashboard. Paper Book: Printed and shipped to India.
What’s Included
An instant PDF download covering the core concepts, practical examples, and key references — ready to read on any device.

