You can use some of the pcb material (fiberglass and copper) which is very thin and flexible already. This you can run thru the printer with no mods and then glue that to a fiberglass board before you etch. I am going to try that first before I modify a Epson printer with the CD tray slot.
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Re: [Homebrew_PCBs] Yet another idea for direct injet printing
2006-08-28 by William Nelson