You should always use File->print preview to adjust scale and position (by toolbar buttons), before printing.
We need to add this information to our wiki
win wrote
I have previous experience with AutoCAD R14 and 2000LT and have tried QCAD. Now, I am looking into different CAD software and specifically for Linux/Ubuntu. Noticeably some of the commands with LibreCAD are different and some features I believe are not yet available.
I am still puzzled how to change the scale (e.g. 1:100m print-out). Looking forward somebody could help me understand more how to manipulate this new software. Thank you.