My previous bottle bulb was a failure of the good kind. I learned quite a bit so check it out first before proceeding.
This one is simpler to assemble, display and has greater reliability.
Extensive research along with clues from other Instructables members has lead me here...
Please play safe when using compressed gas, deep vacuum in glass vessels and electricity....
Step 1: Materials
Again you will need a clean glass bottle. I chose a clear bottle but a colored one would be preferable
A rough service light bulb.
2 part epoxy
some brass welding rod
A refrigeration schrader valve and stem.
a small section of 1 inch nylon rod.
Light wiring, heat shrink tubing and chain.
You will also need a vacuum pump. not a vacuum cleaner
Argon and regulator
Step 2: Harvest the filament.
That is the main reason for my choice to harvest a filament from an existing bulb.
I chose the rough service bulb since the filament is thicker and has more supports.
The bulb is wrapped in a paper tower and gently tapped with a pointy metal object to break it. The filament along with the glass support is removed.
I chose to shape the filament into a heart for aesthetics. This was done with small pliers and patience. Don not tough or stress the filament or it will burn out.
Be sure to keep the leads long since the silvery pare of the supports near the glass are coated with zirconium which helps with any left over air that wasn't removed, more on this later.
It needs to fit through the neck of the bottle.
Carefully lay it aside for later.