-
Compare Features works on SolidWorks parts that have parameterized features. Parameterized features are those features whose dimensions you can modify. An example of a part without parameterized features is an imported part whose only feature is 'Imported1'. Compare Features also compares appearance properties, including colors, optics, and textures.
-
Compare Features works only on solid features.
-
Compare Features uses the feature names as the main criteria for pairing features.
If you change the name of identical features in the two parts, Compare Features classifies these features as unique. For example, the feature Hole-1 in Part A is identical to the feature Hole-1-Mod in Part B. The only difference is the name. When compared, both Hole-1 and Hole-1-Mod are classified as unique features instead of modified features.
If you have two parts with identical features, but from two different language versions of SolidWorks, the features are classified as unique because their names are different.
-
Compare Features does not compare thicken, cavity, shape, deform, combine, join, split, move/copy, or delete body features. These features appear under Uncompared Features in the tree on the Compare Features Results tab 
of the Compare Task Pane.
-
Compare Features cannot meaningfully identify completely dissimilar parts.
If two completely dissimilar parts have features with the same name and type, Compare Features compares these features and tries to classify them as identical or modified.
-
Compare Features requires that the two parts be in the same position with respect to the origin. If one of the parts has been moved, the results may be incorrect.