Often, components will have features that can be arrayed, but the array is not perfectly consistent -- there are some copies in the pattern that you don't want. There are two easy ways to do this in SolidWorks.
Method 1 (SolidWorks 2001 and later): Create the pattern as you normally would, but before you click OK, scroll down the PropertyManager dialog to find the option for Instances to Skip. Click in this option box. You will now see colored dots in the graphics window over each instance (copy) in the pattern preview. Click a dot to change its color and remove that instance from the copy.
Method 2: After the pattern has been created, you can select one or more instances and hit the Delete key. A dialog will appear that gives you two choices - eliminate the entire pattern (not what we want), or eliminate only the selected instances from the pattern.
In either case the next time you Edit Feature on the pattern, you will see that the skipped instances are now listed in the Instances to Skip option box. You can delete items in that list to add them back into the pattern, or you can click the colored dots to turn the instance on again.
