Solder problem on copper pipe Home › Forums › Archives › Old Bulletin Board Archives › Solder problem on copper pipe This topic has 1 reply, 2 voices, and was last updated 27 years, 2 months ago by b kennon. Viewing 1 reply thread Author Posts 26 Jul 1999 at 9:01 am #284043 sflahertyMember What do I need to do to make the solder flow when it will not work even with flux? 27 Jul 1999 at 1:43 pm #307067 b kennonParticipant I would assume that you have to remove all the water from the pipe. What do I need to do to make the solder flow when it will not work even with flux? Author Posts Viewing 1 reply thread The forum ‘Old Bulletin Board Archives’ is closed to new topics and replies.