this post was submitted on 21 May 2024
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AFAIK the optics have to be regularly cleaned, calibrated and replaced. And by regularly, I mean daily/weekly for some of that.
The process is a carefully guarded trade secret and intentionally difficult. The companies that own the machines are not allowed to have employees who are trained in the process. When you buy those machines it comes with a service contract from the manufacturer. And the manufacturer is ASML - a Dutch company.
Again, if THATS the case, then you just find your own parameters and experiment with your pwn till its right. You don't give up on the last car on earth if you're a mechanic and they took the battery out. You find another that's compatible or research how you could make your own.
Saying that a "company" with "trade secrets" is just a dumb patent road block to scare off consumers
You underestimate how extremely complex semiconductor photolithography is. It is the most complex manufacturing process ever conceived by humans to produce the most complex systems ever built by humans.
China afaik is currently doing exactly that, as well as a few companies in the United States. Its not something just as easy as "experimenting yourself" (although, that is a very simplified way to look at it.) This is decades of research, with billions of dollars. Countries like China can socialize some of these aspects, and seems to be doing very well. It still takes time and money, and research. All the while, the current leading companies are still also furthering their own research.