Original instructions: http://projecttimbo.blogspot.co.uk/2013/11/daft-punk-helmet.html
Detailed instructions: http://www.instructables.com/id/Guy-Manuel-Daft-Punk-Helmet-with-Programmable-LED-/
Print one of each the following:
Join with M3 nuts and bolts and plenty of hot-melt glue. Add car body filler, sand extensively, paint gold.
To make the visor, either use VisorMould.stl and a CNC mill to cut a wooden mould, or if you don't have access to a CNC mill like me, use the sliced mould files to cut slices of 6 mm MDF, align with 6 mm dowel and glue together, then sand to make a smooth mould. Vacuum form some thin PETG over the mould, and tint the inside surface with VHT Niteshades.
If you want the helmet with lighting, print the diffusers with translucent filament.
You can use LEDBank.stl to mount LEDs and hot melt glue them to the diffusers.
I used an Arduino to control the lights (see FullControl.ino) and 8 AA batteries for power. If you're doing the same, you can use Case.stl and Caselid.stl to hold the electronics.