Posted by Lambertus on Mar 31, 2021; 1:07am
URL: https://forum.librecad.org/Librecad-keeps-adding-blocks-to-block-list-tp5715315p5720496.html

Thank you both for spending time on this.

Here is some clarification in case it helps figure out what is happening.
1. How i used the blocks.
I drew a shingle and then saved it as a block.
Then i would place that block using the move/copy tool. I only use the move/copy tool and not crtl short cuts.
To place a new shingle of that type, i would use the move/copy tool to create and place a copy next to the first shingle.
After creating a row of 3 of them I would select and use the move/copy tool to copy the 3 to the next row of shingles.
I selected those two rows of 3 shingles and copied them to the next row and so on.
That created the roofing for the first view.

2. How i created the roofing in the second view (opposite side of building).
I created a diagram of just the elements i wanted (sheathing, tar paper, shingles).
In the second view i imported the file of the roofing elements as a block.

3. Selection problem of large files.
Dellus alerted me to this during the discussion about a selection problem with angle dimension set to zero.
For the architectural drawing of four building views, i created a new drawing and imported the four building views from their four separate files. Each view was imported as a block.
I could not select any element in that file of 12 Mb.
I had to edit the file because of another LibreCAD quirk, any hatch area in front reverts to being behind the elements from such a block import.
I understand the layer lock tool and its influence on selection. I use that all the time to control what gets selected.