I've put the word etching in quotations as the method to get conductive tracks on a glass or plastic film might not involve a subtractive approach as with traditional PCBs of applying a conductive layer (such as ITO in this case) and then removing the unneeded part, but rather an additive approach such as printing or drawing the tracks on a transfer medium sheet and somehow transferring it to the glass or plastic (such as PET) film, etc. later, or printing/drawing directly on the glass or plastic film somehow.
Need two transparent conductors in an arrangment like this on a transparent plastic film. Such as ITO on PET. But it doesn't have to be ITO necessarily.
Of course for others it can be anything else such as this.
There are too many tracks and their size and their gaps are going to be sub milimeter, so hand drawing is out of the question.
Will be running few milliamps and about 8 VDC. Size of the whole film is going to be 10 cm x 5 cm max.
Since one may need to run dozens or maybe hundreds of tests with different widths, gaps and arrangments, is there is a way to print conductive material on a PET or similar transparent film at home, such as with a modified laserjet or inkjet printer, or a modified mini CNC? What can/should one use for the transparent conductive "ink" and the film and what should one use to get their drawing from a digital file onto real film/glass?