I am fighting with this and it seems that my Blender skill is still not enough to master this problem. I am in need of an 3D object that has flat surfaces but which are irregular in shape (I did my best to try to draw it so please see picture attached).
Can anyone advise or maybe provide a sample file on how can I make an object and then change its dimensions (width, height...) and also change the pattern of the edges? Also this needs later to be extracted as obj in order to make toolpath.
As I need a lot of these any help is greatly appreciated.


