I am really sorry for responding so late, somehow I just saw your comment.
But anyway I couldn't say a lot, because so far I found ways to avoid fusing. There are no glues, screws or fused plastic in this particular project. They can be disassembled in very short time, rearranged or upgraded very easily.
I would suggest this Approach (if possible of course) which is a part of circularity I believe.