Originally Posted by
Peterpan1
What are people doing to clear the lug for tube penetration so it contacts the tube to be joined. Say you welded the external seam, and you had rough cut the internal, it ends up with a lot of grinding, I suppose one could use a cutter and plunge the internal diameter, sorta tight work though.
Files, just files, nothing wrong with a file and some care and skill
one only has a thin section, 1.20mm lug wall of approx .50mm left of the undersize hole to remove.
No need for a reamer either.