From time to time you might find that you need to find the location of the theoretical intersection of lines. This tip will show you how to add a node on the theoretical intersection of two lines in a sketch.
An outstanding feature of SolidWorks is the ability to lock features in a model so they cannot be modified unless you unlock them. This not only safeguards the features, it also speeds up rebuild time.
Reusing sketches allows you to create parts with fewer sketches. This results in a less cluttered Feature Manager and makes editing easier. When you have to make a change you only need to edit one sketch.