Engineering drafting for beginners

Standards, orthographic projection, line types, weights and lettering.

3 lessons · about 0.8 hours · free

Drawing fundamentals

1. 1. Engineering drawings and standards

   Engineering drawings are a precise language for describing parts and assemblies. Learn why standards exist, which ones you’ll meet and what a complete drawing contains.

   • • Explain the purpose of engineering drawings
   • • Name the main drafting standards
   • • List the types of engineering drawings

   14 min

2. 2. Orthographic projection

   Orthographic projection shows a 3D object as a set of flat views. Learn the principal views, the two projection systems used worldwide, and how to choose and align views.

   • • Describe principal orthographic views
   • • Tell first-angle from third-angle projection
   • • Choose the best front view

   18 min

3. 3. Line types, weights and lettering

   Every line on an engineering drawing means something specific. Learn the standard line types, their weights, and lettering rules that keep drawings unambiguous.

   • • Identify standard line types and their uses
   • • Apply line weight hierarchy
   • • Use centre lines correctly

   14 min