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Comment on A home-made lithographically-fabricated integrated circuit

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OK now grow your own SI wafers using repeated Czochralski process based on silicon you made by melting sand.

You just can't impress everyone.

This seems to be a little silly. Sure, that'd be cool, but I mean, he didn't claim to have manufactured his own oscilloscopes here either.

Just putting out next step learning challenges. I'm loving what he's doing, it's a great project, I hope he continues it by exploring different aspects of it.

Other challenges include smaller lithography and CMOS fabrication using a self-aligned gate process. But there are pitfalls ahead, including chemicals that can kill with in trace doses...

I fabricated my own ICs as a teen in my freshman year of college as part of our program, but that obviously wasn't at home. It was still awesome, just going through the entire process.

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