Oh, and I wanted to address the safety of Source attys.
Basically, Reddit exploded when it came to light that Source was using a titanium alloy for their wires rather than grade 2 titanium which they claimed to use and grade 2 was supposedly medical grade.
So... the solder used to connect...
The screw-on parts of the metal Orb are fine (although you may want to heat, clean and/or wipe anything in iso before putting it in your mouth after manufacturing).
Oil does not want to wick down the threading of an Orb shell, it screws in counterintuitively compared to where the wax wants to...
Been real big on vaping concentrates lately so I will likely buy some donut atomizers for my orb...
Have my eyes on a Hercules SR 74x though... I covet it.