Propane or Mapp gas

[optima21]

I think the primus threads are M14 x 1.5mm

 

[leenowell]

Thanks very much @optima21 I think you are right. Trouble is I can't seem to find any adapters that convert that into something I can use to refill my cylinder

 

[brightspark]

Thanks very much @optima21 I think you are right. Trouble is I can't seem to find any adapters that convert that into something I can use to refill my cylinder

i use a blowtorch that fits the primus bottle and took the burner of the end and screwed it in to a bullnose that i re drilled and taped to suit here it is they have put it on home made tools .net https://www.google.co.uk/search?q=propane++refill+adaptors+home+made&sxsrf=ALiCzsY-V-sjvVXToHMddxUuh-o6WPCXgw:1655922249248&tbm=isch&source=iu&ictx=1&vet=1&fir=UnNERHmKcc4fcM%2CAXbBB7a2sFTHkM%2C_%3B0shhYKLn-tDqnM%2CgaNBetCTQ9xSlM%2C_%3B8AzIlY8v8VJH5M%2CanytZOeMJvYHYM%2C_%3BG3ZFuy5QRMU1WM%2CG8GwOW14vmB54M%2C_%3BNRTRVWt78iJ8GM%2Ctkic-DVpNCIq-M%2C_%3BaY6Mhu5s7wjlbM%2CgaNBetCTQ9xSlM%2C_%3BMAdkbvH3ZRfBiM%2CgaNBetCTQ9xSlM%2C_%3B2oYS7R7ccYumPM%2Cv1LeWYnF6LoBdM%2C_%3B3xjQ2uju-jMcHM%2CAgyhoIckGr8_NM%2C_%3Bn8fMY05k7jfy9M%2Cv1LeWYnF6LoBdM%2C_&usg=AI4_-kTlxc7GIGUipTA1lLtMkNyFx8uEYQ&sa=X&ved=2ahUKEwicscSL18H4AhXBnVwKHckzAa0Q9QF6BAgcEAE#imgrc=UnNERHmKcc4fcM if you make one take the one way safety valve out of base of torch it just scews in or it wont fill