I would expect that it is certainly expensive but he seems to be building lots of his equipment himself instead of buying it. The photolithography machine is a

I would expect that it is certainly expensive but he seems to be building lots of his equipment himself instead of buying it. The photolithography machine is a modified microscope with a projector for example. The centrifuge for spin-coating the wafers with photoresist is also DIY'ed according to the video from the article. http://sam.zeloof.xyz/maskless-photolithography/ http://sam.zeloof.xyz/maskless-photolithography/