the current hatching algorithm is not robust enough, and we should be able to do something better in next version(v3).
for v2, you can try to enable "snap to start/end points" only, and move/copy entities subsequently to make sure they are connected.
Ferdi wrote
I can connect elements by trimming. But what should I do if my object is formed by many elements?
My question:
Is there a simple way to close an object which consists of many line/spline elements?