About this 3D model
This body can be made with 3D Metal Printing or better CNC since threads have 0.5mm pitch. It's optimized for PRIMO EM-23 capsules and it's made by following the Capsule's Datasheet. Here the video showing all the required extra components. PCB is up to the builder. He/She can chose for the most appropriate topology here teh video VIDEO ABOUT THE BODY ASSEMBLY