You don't want to extend it out from the floor, you need to extend it out from the surface you're mating to. A more complicated example: https://youtu.be/zKDC

You don't want to extend it out from the floor, you need to extend it out from the surface you're mating to. A more complicated example: https://youtu.be/zKDCULxeYnQ?t=6m17s https://youtu.be/zKDCULxeYnQ?t=6m17s