i wrote some notes about this technique in 02016 https://dercuano.github.io/notes/electrodeposition-3d-printi... and published it in 02019; possibly people who find the process interesting will find it appealing. it isn't original with me, though; another guy here in argentina built a working 3-d printer with this approach, i think before i wrote that, and petermcneeley points out that successful application of the technique on the nanoscale goes back to at least 01996 https://people.ece.ubc.ca/mm/papers/Madden_JMES_1996.pdf (a paper i'd seen many years ago but forgotten) and that he himself had gotten it to work about 15 years ago https://darkcephas.github.io/MELED_paper/MELED_paper.pdf

derctuo and dernocua also contain some explorations of it

derctuo contains my notes from 02020, published in 02020, including three that discuss this process: https://derctuo.github.io/notes/electrodeposition-3d-printin... https://derctuo.github.io/notes/foam-electro-etching.html https://derctuo.github.io/notes/cyclic-fabrication-systems.h...

in dernocua, my notes from 02021, published in 02021, https://dernocua.github.io/notes/fresnel-mirror-electropolis... discusses using it to make optics, https://dernocua.github.io/notes/freezer-seacrete.html discusses using it to deposit rock rather than metal (much faster), https://dernocua.github.io/notes/layers-plus-electroforming.... discusses a process hybridized with lamination of 2-D cut layers to get the rough form, and https://dernocua.github.io/notes/electrolytic-berlinite.html discusses the possibility of using it to print refractory chemically bonded ceramics