Join Date: Apr 2010
The drum method requires a cylindrical piece, the smaller and more threaded front, which twists in the ear, enlarged to these effects. It ends with a square part, to be able to take it with a key and screw it, which is then eliminated. It DOES NOT REQUIRE WELDING, only a piece that is screwed.
The other method requires a soldering mass on the face of the barrel, coinciding with the primitive ear REQUIRES WELDING
In your barrel there are remains of the weld, outside the mass and this is just a welded sheet.
A hug. Fernando K