I saw this on EETimes a few weeks ago it's a link to a link to the Instrucatble It's a good article but they dont's go in to to much depth about the actual etching process. Also I would of thought that under etching may well become a problem at smaller sizes.
Personally I use copper backed Mylar that you can get for about £10 for an A4 sheet then do a conventional photo etch.
No, it's a conventional etching process to make the board.
I could be another one of those "if you have a hammer, everything is a nail" kind of situations. The origional author has access to a 3D printer so biased to using that whenever they can.
I thought that , I think I may have another go at incorporating some Flex PCBs into a plastic model.... Would be very useful for say robotics applications
I was a little confused at first I thought that he used Ninjaflex as the substrate for a flexible pcb but having looked at the article and the tutorial I see that he is using the Ninjaflex as an etch resist because it sticks to copper.
