OK — you read the title right! We reiterate that you should still not use 3D charts unless you must have a Z-axis. Having said that, we are talking about making your 3D columns in a chart transparent. Yes, there’s a reason to do so especially when you find that some of the columns in your 3D chart may be hiding behind one or more of the other columns, just because they are not tall enough.
Learn how to make 3D columns transparent for charts in PowerPoint 2011 for Mac.

