I have many problem when drawing of polymer structure or macromolecules. Our software just chemdraw and its not compatible for polymer drawing. We are very pleasure if you have any suggestion for me to solve my problem. Regards.
Ozi, although it is a software for other uses (digital animation), if you did not know yet, I pointed you BLENDER, maybe the most complete 3D free software. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking: https://www.blender.org/