Nice job cj.. I never thought about making or submitting an article about them.Well done.
fwiw. Been making & selling these for yrs. I include the resistor inside the flanged holder just in case they get put in some other torch. Easy as pie. I use a 150 or 300 Ohm resistor, with a 1000mcd, 5 mm red LED, as I find most people do not want the LED too bright.
I usually make 10 aat.
L.
ps. hint for those interested. Hold the globe with an old pair of long nose pliers & hold over gas ring for a few seconds, to melt the high temp cement/glue & the solder in the 'positive' hole. The cement can all be scraped out to give a bit more room.
pps. Even made a couple of 'specials' for the "Big Jim", "Dolphin" torches. (reverse polarity of LED tho & increase the resistor to ~470 Ohm).