Drill a hole using the 5/16-inch bit through the center of the plastic threaded end of the painter's pole.
Screw one of the 3/16-inch hex nuts onto a side of the hanger bolt. Twist the pointed end of the hanger bolt into the hole you just drilled in the telescoping pole.
Attach the thread adapter to the exposed end of the hanger bolt. Attach the shockmount to the the thread adapter. This is where the microphone will go.
Place the floor flange in the center of the plywood board and screw it in by driving screws through the holes and into the plywood. Insert one of the PVC screw-to-socket adapters into the floor flange and screw it into place.
Place a piece of 3/4-inch PVC pipe into the socket side of the adapter. Attach the other screw-to-socket adapter to the top of the PVC pipe.
Screw the split T into the screw side of the adapter you placed on the PVC pipe. Place the telescoping pole into the split T to hold it into place.