Just had a thought though I’m pretty sure its not the first time someone has thought it. Has anyone ever tried an acidic paste and something similar to the pastestruder for etching pcb directly from your 3d printer or something that feeds the acid through a felt tip pin type setup?
Using an acid resistant pen is quite a common way to go. I don’t think an acid pen would remove enough copper.
So plot with the machine with a resist pen then etch? Sorry of just a variant of the laser printer iron on method huh?
Yes. Checkout http://www.apapageek.com, I have a pen adapter for Mendel Prusa carriage.
Interesting idea! Would be willing to try if the paste is cheap!
@Liam_Jackson lots of people use muriatic acid and peroxide which is fairly strong. maybe with a less diluted form of hydrochloric acid (than muriatic) with a thickening agent that doesnt effect or heightens the ph this would be possible although as I think of it now trace width would be limited in how thin you could go and an environmental wash process would have to be developed as well
You might have a start of a workable idea there. The spent etchant would need to be flushed away with each pass, though, and you’d need to not affect the neighboring copper - so I’m not quite sure how you’d do that, exactly.