Headphones Bullets
Stylish, durable headphones made of shell casings .40 S&W. The final result can be seen on the website: Federal 40 Headphones
Cutting Shell Casings
Install .40 S&W shell casings in the drill and trim. Smooth the edges with sandpaper.
After cutting shell casings should be 12 mm.
Drilling
Drill a hole of 2.7 mm.
Polishing
Polish the shell casings with sandpaper grit 800.
Polish the shell casings with steel wool grit 000 or 0000.
Installing Shell
Put on a wire: shell casing and shield wire.
On a wire tie the knot.
Soldering
Solder the wire to the speaker. For best quality, use a mixture of tin and silver.
Bonding
Degrease surfaces to be bonded.
Glue two portions and placed in a vise for 24 hours.