I'm not sure that you would to make such a microphone holder - they are VERY cheap on the international markets these days, e.g.:
https://www.aliexpress.com/store/product/Audio-Mic-Microphone-Shock-Mount-Stand-Holder-with-Integrated-Pop-Filter-Screen-Microphone-Mic-Professional/1040790_32807824046.html
That said, the materials of such holders are usually machined brass, that gets soldered together, and then nickel-plated for finish.
There are even cheaper versions available in spot-welded iron
Jakob E.