Step 1: The design
Step 2: Parts and tools
I used 1/2 inch pipe and it seems to be stronger than what I need which is definitely a good thing. PVC cement isn't necessary.
The measurement here are approximate and what worked with my Fender Strat. If your guitar is significantly thicker, you might want to tweak the length of the pipes.
2 8 1/2 in
1 7 1/2 in
2 4 3/4 in
2 2 3/4 in
6 1 1/4 in
Foam for pipe insulation (to protect your guitar)
2 Elbow fittings
8 PVC T fittings
1 PVC cross fitting
PVC pipe cutter (recommended if you want to get the job done quickly)
Acrylic paint and brush (optional)