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CHAPTER 1 Inventor DesIgn PhIlosoPhy
Four Ways to Use EOP Markers
Since part features are listed sequentially in the order they were created, the EOP marker allows
you to figure out how a part was constructed. Dragging the EOP marker to the top and then drag-
ging it down one feature at a time recreates the part. This can be useful when working with parts
designed by others and can be used as a powerful learning tool.
You can use the EOP marker to insert a feature anywhere in the model tree. For instance if you
meant to create a hole before creating a rectangular cut, you could just use the EOP to suspend the
rectangular cut feature, and then place the hole feature. Then to bring the rectangular cut back,
you’d move the EOP back to the bottom.
Because part features are based hierarchically in that one is based on another, oftentimes a change
to a primary feature will break a secondary one, which in turn breaks another, and another, and so
on. The cascade of error down through the feature tree can be intimidating and appear to the new
user as if every single feature will need to be rebuilt. In most cases though, if you move the EOP up
to just below the first errant feature and then fix it, the following feature will be fixed as well. If
not you would repair it and step down to the next one, and the next one, until all are healthy again.
Using the EOP to fix features in the order they were created is the best way to approach the task.
In addition, dragging the EOP marker to the top of the part file and leaving it there reduces the
overall part size significantly. This is a good way to reduce a file size if you need to email a part file
to someone. When they receive it they can just drag the EOP down and then see the part as you
designed it. Likewise, if you encounter a blank file in your modeling session, be sure to check the
Model browser to make sure the EOP marker has been dragged to the bottom of the part file.
10. Next double-click the icon for Extrusion1 in the faceplate feature tree (or right-click
Extrsuion1 and choose Edit Feature). This activates the feature for editing.
11. Replace the value of 0.5 in with 5mm, taking care to enter the unit suffix mm in small
case letters, then click OK and you’ll see your edits take place.
12. To have a closer look at the change select the face on the View Cube marked Right. Then
place your cursor over the faceplate in the graphics screen, and use your mouse wheel to
zoom in to the faceplate. Note that you zoom to wherever your cursor is pointing on-screen.
You will see the change has created a gap between the faceplate and the end of the frame of
the press, as shown in Figure 1.21.
Figure 1.21
Editing the
Faceplate
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