What is the thread on the jet?
If you disassemble a bushwalking or camping stove you will come to the jet. This is usually removable for cleaning. The ‘seat’ is usually about a 45 degree taper, and the thread is usually done up moderately tight to make it effectively gas-tight. (Be careful: you would look very silly if you stripped the thread!) I have examined a number of stoves of different brands, both gas and liquid fuel, and in general the thread on the jet seems to be M4.5 x 0.5 , which is a Metric Fine. That is, it has an OD of 4.5 mm and a pitch of 0.5 mm. I have made jets and tested them in some stoves with one of these dies, and it worked. making the hole for the jet is more tricky, as we are talking about a very fine hole. However, both the taps and dies, and the fine drills for the hole, are available. But be careful before assuming that the stove you have is the same as mine. I found several jets in my collection which have a coarser thread. I am not sure what stove they come off though! And some spare j
