Have fence blueprints snap together at the ends. Not sure if palisade do as im not that far yet. Im finding I need to wait for a fence to be built before I place another to avoid gaps.
#Snap points for fences
unborn tiger
coarse light
Palisade walls do have snap points and can attach to each other no problem.
But yes, fences would be quite nice to have snap points, and also a flexible model that lets them angle according to the terrain so you dont end up with one thats twice the height of the one next to it.
shrewd kelp
They are working on it. Hopefully next update.