I think it's less any regulation and more the lack of products to facilitate it. The guys rolling their own from scratch on youtube weren't anywhere near 300 nm last I checked.
I think it's less any regulation and more the lack of products to facilitate it. The guys rolling their own from scratch on youtube weren't anywhere near 300 nm last I checked.
There are plenty of products to facilitate small-scale semiconductor manufacture: university nanofabs all over the world have them.
You can, too, without much/any paperwork... if you have the funds.