This approach initially appears attractive, but if you need to turnaround and etch boards quickly, or need double sided boards done as I find common, then hot lamination is the way to go.
https://hackaday.io/project/7938-pcb-smt-maker-lab-home
https://hackaday.io/project/3363-apache-al13p-laminator-one-pass-pcb-toner-xfer
https://hackaday.io/project/7938-pcb-smt-maker-lab-home
https://hackaday.io/project/3363-apache-al13p-laminator-one-pass-pcb-toner-xfer