I make my own Coleman Q99 generators which is easy enough (for me-lol) . I can fabricate everything except the generator jet so I would have had to steal one from another generator...but that would mean I would be one jet short for my lanterns. I do 3D printing and found that the brass nozzles come in varying sizes. A .2mm nozzle is very close to the required .008 inch needed for a Q99. I found these on Amazon. There are various sizes available. I turned the threaded end on my lathe and brazed it onto my home made Q99 and it works. For some reason the photos are not in order. well.
Oh I say - how very ingenious ! and thank you for sharing I guess you could also fit them to a worn out Q99 that has been cleared as well ?
My next project is to make a threaded jet from these same brass nozzles so that replacement is possible. Once again my 3D printing hobby may have come up with a solution. These are threaded inserts, The 4-40 size interests me as it is close to the 4-48 thread that Coleman used. But using a 4-48 tap to rethread the insert will form the correct threads, you just rethread the insert. I am awaiting delivery of certain items for this project and will update if anything develops. Looks promising.
Interesting. I have also used those MK8 print nozzles as a jet before. Not on a pressure lamp but in an experiment to test how does the gas mantle perform with the flame from acetylene-air mixtures. In this thread: Gas Mantle with Acetylene! I can say that those nozzles work pretty much the same as the usual ones on pressure lamps. Just select the appropriate orifice size and make the thread modifications like what you did in this thread. Just ensure to get the air gap right. (These nozzles are conical and their direct assembly would reduce the effective air gap between the jet and the mixer tube inlet).
I use 3 strands of very thin bare copper (22AWG) wire twisted on a drill packed about 2/3 into the generator from the flare side. Have made a few dozen with no pulsing or other ill effects.
