Make a list of the basic guitar parts such as the body and neck, head stock, tuning pegs, bridge, nut, fret board and the frets. Choose the parts you need to buy from the list for example; the nut, bridge and guitar strings. Acquire the basic workshop tools or use the ones you have at home.
Plane a 2½-foot-long piece of rosewood that is 1 inch thick. Make one side slightly curved and the other side flat, to make a neck. Make one side of the flat side as the head stock and the other side as the joint to the body. File a 2-inch-long surface on the curved side where you will join it to the body.
Cut a 2-by-2-inch triangular piece of wood and attach it to the filed section of the neck using glue, then clamp it together. Drill a hole through the two joined pieces of wood and insert a screw to hold it tight to make a "heel." Remove the clamp 30 minutes after the glue is dry.
Drill three holes in a triangular pattern on the cigar box for the sound holes. Measure the widths and divide these measurements by two to get the center line. Make one end of the center line be "X," and the other "Y," then fix in six equally spaced screws at X. Make a 1-inch-wide dovetail joint at Y, then join it to the heel using glue to bind them, clamp it tightly then drill a hole in it before inserting a screw to hold the two parts firmly.
Remove the clamp, then re-clamp the joined piece to make it lay flat with the sound holes and the flat side of the neck facing up. Mark a point 4 inches from the furthest end of the neck to make the head stock. Insert three screws halfway up each side to make tuning pegs, then use a 90 degrees angle finder and a gent saw to cut a ¼-inch deep notch 1 inch from the head stock. Enlarge the notch to squeeze in the nut and put in three droplets of glue in the notch, tapping the nut in using a hammer.
Mark the frets by dividing the scale length by 1.059461 to get the distance from the bridge to the first fret and divide the distance between the first fret and the bridge by 1.059461 to get the distance between the bridge and the second fret. Repeat the sequence for the rest of the scale length, and cut ¼-inch deep notches on all the marked points.
Cut a 48" fret material using an end cutter, apply a thin film of glue in the slots and then tap in each of the cut pieces, repeating the procedure for all the slots. Place the bridge three inches from X and fix it firmly using screws, then varnish and decorate the guitar.
Tie each guitar string around each screw at the back of the sound box and pull them over the six notches on the bridge, then to the six notches on the neck. Tie them on each screw on the head stock and tighten them.