I agree, photolithography at home is a long way out.

I think if we want to distribute the means of computational production, a better approach would be to print oligonucleotide instructions (requires a custom inkjet printer), and use a cell free extract (e. coli would work) to synthesize proteins which are programmed to assemble the computational substrate from nanoparticles.

Something along these lines: https://www.pnas.org/doi/10.1073/pnas.1422649112