I have built an instrument that resembles a guitar. There is no sound hole, and there are are only 3 strings. These strings however are able to be tightened and loosened to change the pitch of each string.
Materials:A hammer and a nail, 3 Zip-Ties, 3 Screw Clamps, A piece of wood, approx half an inch thick and approx 3-4 ft in length (size may vary on how long you want your guitar), aluminum box, 20ft of fishing line, sandpaper, and lastly box tape.
Step 1: Prepping the Materials
First you will have to find a piece of wood that you would want to use, and then you
will sand down the edges of the wood to make them smooth and to prevent splinters.
Step 2: Attaching the Tuners
You will place the three screw clamps on one edge of the board.
You will then use the three zip-ties to attach the clamps on the board.
Step 3: Connecting the Strings
Next you will take the aluminum box and puncture it three times to create three small holes(You will use the hammer and nail to do this).
You will then tie a piece of fishing line to each hole and then stretch it down the board to a tuner (You will cut up the fishing line to do this).
Step 4: Putting It Together
Next place the back side of the board into the box, and wrap tape around the strings on the aluminum box and under the board.
Step 5: You're Done!
Lastly tune your strings and Enjoy the Music!