was a failure. Leakage past the threads - the threads are a bit dodgy in spite of using a tail-stock die holder. The angle on the mating surface looks a bit wrong - need another form tool I think. Not sure how to measure the angle actually - I'd welcome suggestions. And finally, the 0.3mm drill from the MicroBox I measure at 0.48mm, which is a bit distressing. The pictures show my jet compared with a real one, the the blaze of yellow flame on an MSR GK with my jet, and the stove working properly with a G jet ( running on kero (reduced odour petrole here in France). Regards Murray
My second attempt is considerable improvement - better concentricity, better thread, drilled with a carbide 0.3mm drill so the jet can be pricked with a 0.27mm pricker without much play. I still have a leak at the valves seat even though the angles look very similar to a production jet. Does anyone have any advice? Regards Murray
Mark the angle on the jet and tighten into position. Maybe a Sharpie or Dykem. Remove and see if the metal makes contact all the way around.