Can a competitive miner be crafted at home? Ive been wondering, is it possible to make a good custom Bitcoin miner? AntMiners aren't worth it anymore, and I can't find a miner that is. Can I build a miner myself that will be worth it? If so, what do I need to custom make a miner? What are some basic Bitcoin miner components. How much will it cost approximately? Is there anything else I need to know if i'm going to build a miner? There was some confusion, I don't mean I want to print my own pieces and make my own miner completely from scratch, I want to buy pieces online and make a miner, can I do this somehow?
No, the ASIC chips used in miners are impossible to craft at home, and to my knowledge no competitive chips are for sale as component parts.

Development of new ASIC chips has progressed to a level where it costs millions to create a new template and you need state of the art (&lt;16nm) production to produce them. It is not economic to do this at home.