The pipe then get's soldered to a large 90 deg copper elbow. A M+S (mid side) mic needs 3 elements which are housed in a straight 1/2 inch copper coupling, and 2 90 degree elbows jammed in and soldered in place.
The elements are epoxied to two wires that stick out from the body. Because the case of the microphones are connected to ground, I isolated them using a primer coat of epoxy to avoid ground loops. The brass screen cage also is attached with epoxy because it has to go on after the microphone elements, so I can't use a torch to solder, lest I melt all of the wires.