Items you need for this project: Several large shipping boxes made from corrugated cardboard. The tighter the corrugation the better. Several sheets of non-corrugated composite cardboard like cereal ...
Attached are word files (now also in PDF!) with templates for the body and neck. Print and cut out each template. Glue these templates onto some thin cardboard or cardstock (I used a file folder) because you will be using them a lot. In the files, the templates are labeled as follows:
Body A: Top (aka Soundboard)
Body B: Middle
Body C: Back