Don't be tempted to start cutting out all your pieces before starting to put it together. You will find out along the way that some sizes may change.... ever so slightly. Cardboard may look smooth and even but in reality there are dips and valleys not seen with the naked eye. Your cutting may not be as precise as you think either. The way I construct a piece is to cut the outside pieces first and cut individual pieces for construction as they are needed.
For this breakfast bar I know I want it in 4 sections. There are three seating area sections and one connecting section between the bar and the existing cabinets. All four sections will be held together by the top and bottom. I already know I will not have enough cardboard to complete the whole furniture piece. Looking at what cardboard I have here, it looks like I can complete only one section for now. I'll do as much as I can and wait for the man who supplies me with cardboard to bring more. I'm told it may be a while as he doesn't get boxes all that often. It's worth the waiting though because the boxes are good quality.
Are you ready to get started?