&quot;Fabbing&quot; your own ICs is very hard.  I know only of a single DIY effort which succeed and it takes much equipment and knowledge.  Personally, I&#x27;d be happy to make just a couple of transistors (see also: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10558206" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10558206</a>)