Regarding multiple manual passes thru a laminator.
Here is my solution for that. A modded multi-overlapping-pass laminator. Single or double sided boards automatically in one automated multi pass.
https://cdn.hackaday.io/files/7938339619392/8a-Toner-Transfer-laminator.mp4
This is the laminator upgrade project.
https://hackaday.io/project/3363-apache-al13p-laminator-one-pass-pcb-toner-xfer
Here is my solution for that. A modded multi-overlapping-pass laminator. Single or double sided boards automatically in one automated multi pass.
https://cdn.hackaday.io/files/7938339619392/8a-Toner-Transfer-laminator.mp4
This is the laminator upgrade project.
https://hackaday.io/project/3363-apache-al13p-laminator-one-pass-pcb-toner-xfer