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→Creating a sketch
If you'd like to create a sketch from a component that already exists, press the '''Create Sketch ''' button and select the surface of the component you'd like to make a sketch plane from. The surface will be highlighted a light yellow color. Sketch planes '''must be created from a 2D plane'''. In other words, the surface you choose must be flat if you do not create additional planes. To see advanced information about planes, see the appropriate Wiki page.
== Drawing ==
<h3> Lines </h3>
<p> Perhaps as a starting exercise, create a simple shape on your newly made sketch plane. There are four main ways of selecting the line tool. </p>
#Press the L key
#Click the line icon in the tool bar.
#Select line from the SKETCH drop down menu in the tool bar.
#Right click on a sketch to access the option wheel, then hover over sketch and then line with the mouse.
<p> Select the line tool and draw a simple line. By default, you can see that the units are millimeters. Additionally, the dimension box is highlighted so any number typed while making the line changes the dimension instantly. Type in "5 in" and see what happens. <br/> Fusion 360 interprets the inches as a unit of distance and converts it into millimeters. Although it is advised to use the metric system for ease of calculations, make sure you consider the tools you are using as well as any other software before making a definite decision on measurement units. Make a 100 mm x 100mm in square with these lines. Notice that the surface grid is also measured in mm. Also note that every left click creates a new line segment. To stop, either create a completed shape (denoted by an orange-colored fill) or right click and select Cancel on the option wheel. </p>
<p> If you started your square from the origin (0,0 on the sketch plane), you will notice that the two lines touching the origin are constrained (denoted by a black color). Conversely, the two lines not touching the origin are not constrained (denoted by a blue color). Constraints are characteristics of your sketch objects that limit movement and change. For example, if I give a line a vertical constraint, no further actions will change the orientation of that line. It will remain vertical. Logically, a sketch or shape is fully constrained when there can be no movement in the 2D space from further actions. Any attempt to move the sketch will move the entirety as long as it is not constrained to the origin. In order to learn the specifics of constraints (highly recommended) please visit the Constraints Wikipage.[[Main_Page]]
<h3> Specifying Dimensions </h3>
<p>
# Apply constraints
# Finish sketch
