Bryan wrote:
An even better way is to file *across* the holes, cutting the brass body
down to two thin feather edges which are easier to solder.

Even better is to do both. Removing the plating inside the hole will
promote the flow of solder across the junction of connector body to
shield, which is what we want.

Sorry, I cannot have explained that clearly enough.

If you do what I suggested, there is no point in removing the plating
from the inside wall of the hole first, because you're going to file all
of that metal away.

Keep filing until the inside wall is completely gone, and the hole is
surrounded by a sharp edge that tapers to zero. At that point, stop
filing - it's ready for soldering.


--

73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek