How to Make a Wrench Drawing for Drafting

Written by catherine paitsel
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How to Make a Wrench Drawing for Drafting
Wrenches are a simple tool to draw. (Comstock/Comstock/Getty Images)

A wrench tool is drawn in many architectural renderings to demonstrate the position of nuts and bolts. They are simple to draw, as they are only made of two primary parts. The first part is the handle, which is long and sometimes has a hole at the end for storage purposes or to fit and tighten one size of nut. At the other end is the adjustable, crescent-shaped clamp that secures and tightens a range of nuts and bolts. Accuracy and proportions are important in drafting, so keep your lines tight and always erase excess pencil lines and smudges.

Skill level:

Things you need

  • Ruler
  • Compass
  • Paper and pencil
  • Eraser

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  1. 1

    Draw a circle with the compass. Make a dot in the centre of the circle. Draw a wide "V," extending from the dot toward the outside edge of the circle. Stop halfway to the edge, and then draw two parallel lines coming straight out of the circle's outline.

  2. 2

    Erase the part of the circle between the two lines. Now you have the crescent part of your wrench. To show one side of the wrench moves to adjust, continue the left "V" line through the centre dot to the other side of the circle.

  3. 3

    Make the outline of the adjustable side of the wrench slightly narrower, and then erase the original line. This demonstrates the wrench has two parts and is not one continuous crescent.

  4. 4

    Draw a small rectangle at the base of the wrench head. Draw a spiral inside the rectangle to show the mechanism that adjusts the wrench width.

  5. 5

    Sketch the handle using your ruler. Curve the head of the wrench slightly into two parallel lines approximately four times the diameter of your original circle. Round the end of the handle, and draw a small circle at the end of the handle with the compass.

  6. 6

    Erase excess lines. If necessary for the draft, label the wrench pieces or specify when the wrench is needed for construction.

Tips and warnings

  • Work from a picture of a wrench for more accuracy and ease.

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