Discuss orthographic projections and pictorial drawings.
What will be an ideal response?
Drawings used for most welding projects can be divided into two categories-orthographic projections (mechanical drawings) and pictorial. The projection drawings are made as if you were looking through the sides of a glass box at the object and tracing its shape on the glass. If all of the sides of the object were traced and the box unfolded and laid out flat, there would be six basic views shown.
Pictorial drawings present the object in a more realistic or understandable form. These drawings usually appear as one of two types, isometric or cavalier. The more realistic perspective drawing form is seldom used for welding projects.
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