is this done before track is laid down, piece by piece as you go, or after gluing/nailing is complete?
is joiner removed?
file only on top and inside edge of rail - correct?
finally question, any hints/tips on soldering n-scale track?
I have trouble optimizing track. Using Atlas sectional track on scenic ridge layout. Straight and Curves are pretty much debugged, but Turnout Switches are causing too many derailments. Trialed using 3 types of n-scale engines, both directions. Turnout next to curve derails. Turnout on...