The internal structure for the handle was made out of laser-cut plywood stacked on top of each other (used Slicer to slice them properly). There was a total of 44 individual pieces that needed to be put together. Since many of the dowel holes didn't align properly, I used solder wire instead along with wood glue to join the separate pieces together.

However, wood was not my first choice of material. I had initially thought of using cardboard for the internal frame. After setting the cardboard on fire a few times, I decided it would actually be quicker just to use plywood.