Discusses abrasive types (Aluminium Oxide, Silicon Carbide), grit size, grade, and structure.
Most engineering colleges keep multiple copies of Hajra Choudhary in their reference and lending sections. This is the best way to access the book for free.
: Recent editions (like the 15th and 16th) have been revised to include updated industry practices, such as Numerical Control (NC) of machine tools , Non-traditional machining , Industrial robots , and Rapid Prototyping . Workshop Technology Vol 2 By Hajra Choudhary Free Pdf
...then this book is non-negotiable. However, if you are looking for or Additive Manufacturing (3D Printing) , note that older editions of Hajra Choudhary focus heavily on conventional machining. For modern topics, pair this book with a separate text on "CAD/CAM."
Covers reciprocating machine tools used for finishing flat surfaces, cutting slots, and machining large keyways. : Recent editions (like the 15th and 16th)
—detailing their construction, working principles, and operational parameters. Modern Integration : Unlike older texts, it explicitly discusses CNC (Computer Numerical Control)
Hajra Choudhary's textbooks are staples in the South Asian engineering curriculum. The text is designed for: For modern topics, pair this book with a
Read the chapter on lathe or milling operations immediately before or after your practical workshop lab sessions to reinforce the concepts.
Elements of Workshop Technology Vol. 2 (Machine Tools) by S.K. Hajra Choudhury is a definitive resource for mechanical and production engineering students. While Volume 1 focuses on manufacturing processes like casting and welding, provides a deep dive into the principles, operations, and applications of various machine tools. Core Topics and Content Breakdown
The book provides an exhaustive look at the "Big Four" of traditional machine shops: