In this tutorial I show you how to build my 1-wide, expandable Floor&Ceiling pop-up Block Swappers. They are compact, simple, button-activated Block Swappers with the toggling blocks extruding from the flat surface area. Intro: 0:00 Floor Swapper: 2:54 Ceiling Swapper: 5:54 MC-Edit Schematic (Floor): http://www.mediafire.com/file/i3ms3sh... MC-Edit Schematic (Ceiling): http://www.mediafire.com/file/z5df5bq... Please like if you enjoyed the video. And if you really liked it please subscribe, if you haven't yet :)