Just getting started on our propane forge, made from an old outdated 20 pound tank. Cut out the ends and opening for the burner holder so far. In the picture is the angle I think will work for the burner, a straight edge is in it to show the angle. Have not welded the holder in yet, waiting to see if all agree with the angle.
Also shown is the GACO-750 burner that has a 1 ¾ inch opening and a .0625 orifice.
When taking out the tank shutoff valve I had to make a tool out of 2 inch square