Posted by dellus on Dec 12, 2019; 2:31pm
URL: https://forum.librecad.org/Hatch-patterns-available-tp5717990p5718129.html

That is a hard nut - I couldn't crack it.
First I found and deleted a very tiny copy of the content of the 100x100 box somewhere left the origin. Then in the Block List I discovered and deleted unused blocks. I moved the drawing's content to Layer 0 and deleted the others. Set units to None and paper size to A4 (standard). I got the file size down to 104 kB.
But to no avail. Further experiments showed LC hatches don't accept circles, splines and polylines. Seems there is a lot more to investigate.