I realize that this is 3 years after you asked this question, however I stumbled across this thread and figured I would reply even though you've probably either figured it out or given up. Here's what you need to do to make a honeycomb pattern.
Steps:
1. Go into the sketch Tab and click on the down arrow under the rectangle tool.
2. Look at the bottom and select the "Polygon" tool
3. It will pull up a settings menu and obviously a honeycomb is a hexagon, so type in 6 sides if it isn't preset to 6.
4. Draw the hexagon to the size that you want and hit confirm.
5. Now look to the toolbar at the top and locate the option that says "Mirror".
6. Select every single side on your hexagon and then on the settings tab that pulled up, pick the tool that says "Mirror Line" and then select one of your sides.
7. Press apply and then you have your pattern started.
Now I am assuming that you want an outlined honeycomb pattern sort of like the file that the user above me attached. If you want to do this, all you have to do is make smaller hexagons inside of the preexisting ones. Then just extrude what you've made and you'll have your pattern. Again, don't anyone say anything about how dead this thread is, this young man (yes I realize he is now 19) was looking for help and he never received an explanation, so I figured I'd help him out. Have a nice day everyone and I hope that this was helpful.
