Graphics Programs Reference
In-Depth Information
FIGURE 16.12
Adding the dimen-
sional constraint
Click the arc centers for
the constraining points …
… and then click here
to place the dimension.
6. Click a location above the drawing as shown in Figure 16.12.
7. At the Dimension text = prompt, press ↵ to accept the current value.
The dimension constraint appears above the drawing and shows a value of d1=6.0000. The d1
is the name for that particular dimensional constraint. Each dimensional constraint is assigned
a unique name, which is useful later when you want to make changes.
OSNAPS ARE FORCED OFF
In an earlier exercise, you had to select the Center Osnap from the Osnap menu. When placing
dimensional constraints, you'll need to use the Osnap menu to select Center Osnaps. Running
Osnaps are automatically turned off when you use the dimensional constraint tools. This is because
the dimensional constraint tools use their own method of finding locations on objects.
Now try editing the same part by changing the dimension:
1. Double-click the dimension value of the dimension constraint (Figure 16.13).
2. Type 4.5 ↵. The part shortens to the dimension you entered.
FIGURE 16.13
Double-click the
dimension value.
Next, add a dimension to the arc on the right side:
1. Click the Aligned tool from the Tool Sets palette.
2. Select the top endpoint of the arc on the left side (top of Figure 16.14). Do this by first hov-
ering over the arc near the endpoint. When you see the endpoint marker, click the mouse.
 
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