Side hole in a small forge?

[Patrice Lemée]

Another question for the small 2 brick forge I am building. I see one design with the side hole for the burner centered and one offset higher. I suppose it is to get the flame to flow around the piece in the chamber instead of just hitting it.

Any idea which of the two work best?

Pad

 

[howiesatwork]

offset works better.

 

[Patrice Lemée]

Thanks, offset it will be then.

Pad