My invention is a 3D ukulele/mini guitar named guitarl. It can make music when you pluck the strings. I choose it because I was thinking of using rubber bands as guitar string, then i thought of making a guitar. My partner also thought of doing that.
My first idea was to make a 3D instrument made out of wood. So I used adobe illustrator and the laser cuter to make a design. I also wanted to make a handle and tie 3 strings onto it.
The first time I cut the wood the pieces didn't come out exactly the right size. So I ended up using popsicle sticks to fix it, but I didn't really like to way it looked, and it was also hard to tie/glue on the strings.
Then I recut the wood so that there weren't any sides to it. It was just a flat piece of wood. The problem with this design, is that i could tie of the strings, I also couldn't glue them on. So I tried making a hook for the string to go around, but it didn't really work.
For the final design I just used the top and bottom pieces, and the side pieces that fit. I had to laser cut 2 other pieces because the original ones didn't fit. I ended up using hot glue to glue everything together, and i figured out a good way for the string to be tied around the ukulele.
My favorite part of the invention is the design of the ukulele. We used the laser cutter to cut the wood and we made the model 3D.
The main feature of the ukulele is that fact that it can make music. We tied some strings on tighter to the ukulele so that it can make different sounds.