This step is probably most dangerous. The bulb could easily shatter. Wear Gloves!
I used TeamDroid's
Here's a quick run through.
- Break off the metal contact from the bottom
- Use a screw or a knife to crack the brown glass insulator
- Looking inside you will see the fill tube. Break it off and remove it
- Remove the filament and other debris with needle nose pliers
- Use a dremel to grind down the glass edges inside for extra safety
- Clean out the powder with water
- Scrape off the writing with wire wool