Have you ever made a change to a feature or sketch in your model
and suddenly got an error or two show up somewhere else in the
model? How many times did the error look like this?
Do you know what to look for when this message appears? The
first bullet point tells you to delete the dangling sketch
entities, which could be sketch relations or dimensions. When you
edit the problem sketch, those dangling entities will show up in a
yellow-brown color by default. This color can be changed by going
to Tools > Options > Colors > Color scheme settings >
Dimensions, Dangling. If you can't immediately see anything wrong
with the sketch when you edit it, you can use the Display/Delete
Relations button on your sketch toolbar to find them for you.
The Display/Delete Relations tool can
help you find every sketch relation or dimension in your sketch, or
filter for a subset of them.
Dangling items will show up in the
list of sketch relations and dimensions in the same dangling color
that was mentioned previously. Clicking on any item from the list
will highlight the sketch relation or dimension, and the sketch
entities they relate to in your graphics view. There are even
buttons offered to suppress or delete the sketch relation or
Once you know where to look for
dangling sketch entities, the time required to fix
the problem is drastically reduced. The Display/Delete Relations
tool is also great for getting familiar with the relations in a
sketch that you didn't create. Let me know if you've ever used the
Display/Delete Relations tool to help a co-worker through a tough
time with a sketch.