newmagrathea
Sr Member
If I can make any suggestion at all, I would make your vertical cut into the weldment “nub” about 1-2mm away from the booster vanes and then file the rest of the way toward the vanes. My experience has been that I then needed to make a horizontal cut through the weldment nub toward the vertical cut, and finally drilling down through the hole the weldment nub is above/is filling in the barrel jacket.
Thanks for the tip, they are always welcome.