Hi, I’ve just set up my presto-lite air/acetylene torch (1 regulator)
after a 5 year break. Have checked the torch, and all is well. What I
can’t remember is how much air to introduce by unscrewing the “air
mixing?” part? I started by making the chamber BD open, but really
can’t remember what I’m looking for. Seems that the more air
introduced, the blue flame gets a bit longer…any suggestions.
Also, I know that a small pop is normal when turning off the flame,
but I’m getting quite a loud pop, with a bit of a flame. What would
this be due to?