Full build of a custom neon lamp

This project was inspired by a joke a friend made about vintage glass screw-in fuses looking like collectable neon lamps. It made me realise that I could make a custom version using just the bare base of a lamp with a suitable cover.
These little neon indicator lamps usually run at 1mA or less and use a fraction of a watt of power. The ones in appliances are often over-run as mentioned recently by Technology Connections, but when run at a sensible current they can last virtually forever.
In 220-240V countries I recommend using two 100K resistors, and in 100-120V countries I recommend using two 22K resistors.
I printed the cover in clear/natural PLA, although other clear plastics would work too. I used a classic orange neon lamp, but you could use the phosphor coated ones too for colours like green, blue and white. However, the plain neon indicator will probably be brightest.
The openscad script is at the bottom of this description.
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Here's the openscad script. If you copy and paste it into openscad (freeware) then it will let you create an STL file to print.
The variables at the top of the listing can be adjusted if desired, but are currently the same as I used to make the cap in the video. Press the hourglass button to make the STL file, and then when it has been created press the STL button to save it. For a fast preview of any changes press the button next to the hourglass button.
//Lamp cap diamond.
//You can adjust the five variables below
base=25; //Diameter of base for lamp
rim=5; //Length of rim at base
size=50; //Size of diamond
facets=6; //Number of sides (default 6)
scaling=0.66; //Ratio of length to width (default 0.66)
//Don't change variables below here
halfsize=size/2;
$fn=facets;
difference(){
union(){
//outer body
translate([0,0,0])
cylinder(h=4+rim,d1=base,d2=base,$fn=100);
translate([0,0,-(base/2)+rim])
cylinder(h=halfsize,d1=0,d2=size);
translate([0,0,halfsize-(base/2)+rim])
cylinder(h=size*scaling,d1=size,d2=0);
}
//Inner core.
translate([0,0,-1])
cylinder(h=6+rim,d1=base-2,d2=base-2,$fn=100);
translate([0,0,-(base/2)+rim+1])
cylinder(h=halfsize-1,d1=0,d2=size-2);
translate([0,0,halfsize-(base/2)+rim])
cylinder(h=size*scaling-1.5,d1=size-2,d2=0);
translate([-halfsize,-halfsize,-halfsize])
cube([size,size,halfsize]);
}