An Especially Challenging Glass of Water

RAY: You have a four-ounce glass and a nine-ounce glass. You have an endless supply of water. You can fill or dump either glass.

Now, it just so turns out that it's possible to measure six ounces of water using just these two glasses.

What's the fewest number of steps in which you can measure six ounces?

Think you know? Drop Ray a note!

[ Car Talk Puzzler ]