If you're looking to make a table, it's important to first consider a few factors in your decision. First, what kind of table are you looking to make? Does it need to be functional or decorative, and what kind of material are you going to use? You should then consider the size of the table, is it going to be big or small? Is this an everyday use kind of table? Maybe you don't have a lot of space, or need the table made in such a fashion that it can easily be transported, or stored. In these instances, consider making a fold-away table.
Now that you've determined you'll be making a folding table, determine whether you're going to use wood or metal to construct your table properly. You'll need a large work area, as well as enough wood or metal to cover the entire surface you'll need, as well as the proper tools. This might consist of a hammer, metal or wood saws, drills, screws and screwdrivers, or nails. It could also mean welding equipment, as well, if you'll be working with metal. You'll also need a pencil and tape measure to properly measure and cut the material before building. Sandpaper might also be needed to finish rough edges, as well as hinged joints.
Once all of the tools and materials are acquired, it's time to begin. Using the material you've determined will be the tabletop, cut the your desired length, using the tape measure and pencil to mark it off, and the appropriate saw to cut to length. Sand or polish the rough edges of the table to avoid injury and provide a cleaner look for the tabletop. After the top has been cut to specification, it's time to make the legs that will support your creation.
Using either the same material as the tabletop, or something different, if you prefer, measure the leg lengths to the appropriate size for the table height you desire. Drill holes on the edges of the table where the legs should be placed, and attach a hinged joint. After the hinge has been secured with a screw or nail, drill appropriate holes in the table legs, as well, and attach to the joint. This will ensure that the leg folds up or down accordingly. Make sure the leg lengths are all exactly even, to avoid overlapping when folded in on itself.
Once the table legs have been placed, test their flexibility. If they're up to your standards, feel free to finish the table with the stain of your choice, or add some flair and design to it. You have now built a table that is not only functional, but can be folded away for storage or portability.