Semi Auto Bren Tutorial 3
the next step was to make a filler section to fill the gap, I machined the
1/2" wide slot and left it a little wider than the receiver.
A 1/2" x 1/2" bar was used to locate the filler internally, now it is ready
to weld.
I tacked the filler in place on all 4 corners, then grooved out the sides
with a die grinder.
Then the filler was TIG welded in place with a good deep weld.