If you followed any of the above links, or if you already know anything about luthiery, you will have no doubt realised that these aren't traditionally made out of cheap plywood. Tradition dictates bookmatched quartersawn hardwoods such as Maple or Honduras Mahogany, and tonewoods like Sitka Spruce or Californian Redwood. However, for me I have found that the 4mm exterior grade 3ply that I had left over from my boat building project
fit the bill for both strength and lightness. As a bonus, it's easier to work with, you can cut it with a knife, and it's only NZ$20 for a full sheet. You're more than welcome to use the proper materials, but some of the methods you'll need will be similar to those in the links section than what I'll show here.
Enough talk, lets get down to it. Start out by printing off the blueprints for the neck and the top & back.
Cut a couple strips for the sides, 1 3/4" wide by 20" long. You can do this with a straightedge and a sharp knife, just score it a few times and snap it like sheetrock.
Cut one piece of ply for the top, try to pick a bit with some nice grain, and cut it about 1/2" wide of the line.
Cut another for the back, also about 1/2" oversize all around, making sure to include the bit at the top for the heel of the neck. I forgot that bit and had to scarf on some scrap later on.
For the headblock and tailblock I had to laminate together some pieces of my hardwood floorboard to get 1 3/4" stock. Once you have a block about 6" x 3" x 1 3/4" trace the headblock curve onto it from the blueprint. You can cut the neck heel tab off of the blueprint for this, we won't need it again.
Carefully cut out the headblock making sure to keep the blade square, we'll be needing both halves of it.
Cut out a piece of hardwood for the tailblock as per the blueprint.
Trace & cut 2 or 3 pieces for the neck, it needs to finish at least 2" thick for the neck and about 3" at the peghead end, but you can add ears for that later.
As you'll see later on, my peghead finished to about 6" long, so I ended up cutting off a lot of material from the end. It will depend on the peghead design you choose, but the neck profile blueprint allows for a full F-style scroll peghead length.
Glue up your neck.