The plastic piece that holds the shock mount for my microphone onto my boom arm just snapped in half, and I just hastily taped it back on with gaff tape for a while. I just decided to whip up something to replace it in f360. 

     All you have to do is put the metal threaded pole in between 2 of the “mic arm clamp v2.stl." Then just slip it in between the two metal pieces of the stand. I had to use some pliers to get the screw in, but you might have better luck. Then just thread on the knob on the other side.

Also, here's the microphone arm I have: https://a.co/d/05VPJdC