Technical drawing, also known as drafting, is the technique of creating engineering drawings done with compasses, rulers, and computers. Coach Ed Batchelor has created a pamphlet on technical drawing to introduce SECME students to technical drawing. Click here for the Technical Drawing for SECME submissions PDF.
Click here for a fast, Flash based introduction from Engineering the Future. I especially like how EtF handles orthographic projections.
Drawings which contain all the information needed to make the object you have designed, including dimensions and details of components, materials and assembly instructions, are called working drawings. Although working drawings for simple products may sometimes be done in isometric or planometric projection, the normal drawing technique for working drawings is orthographic projection. The BBC GCSE Bitesize has more.
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