Using a clearer board is a less invasive way to remove your honey for your bee hive. This is because you do not have to upset the bees by brushing the bees off individual frames.
Leave the clearer board on over night for best results. The bees will then have gone into the box below and will not be able to get back up due to the one way exit.
The key to remember is if you are taking a box off you must put a box on underneath, so when the bees pass through the one way entrance they have room below.