Flux for feeder and joiners soldering

I just tried using the solder on my old sectional bachmann track.. THe solder that comes with some soldering sets... the thick stuff lol...

IT SUCKS...
Its dull and its too much at one time, its hard to control...
The 0.015 takes a lot more obviouisly but its more precise...I like it :)
 
Anything soldered with acid flux must immediately be thoroughly scrubbed and flushed with lots of water. If you can hold your layout under a running tap whilst scrubbing vigorously away, it shouldn't be a problem. hamrbday2 tooth1