I think it all depends on your torch type, and how much oxy pressure you have. On the DVD that came with my GTT torch, they show setting up and running a flames that is not much longer or bigger around than a match stick.
That is also why some people recommend having a mirror set up some where to the front of your torch, so that you can keep an eye on your ports. If they start to glow at all, then you need to adjust your flame. It also makes sure that you notice if one of your ports is getting blocked and needs to be cleaned.
Eric
|