A method of making a custom mold and the custom mold itself having a first layer, a second layer, and a tail that are formed around the bulging area of an implantable medical device (IMD) are presented. The moldable material during hardening is flattened to form a docking platform for the flat planar bottom of an external antenna. The final apparatus of an antenna support may have all the custom contours of the patients body around the implanted IMD. An optional tape patch and/or bandage may help maintain a proper placement of the external antenna over the IMD depending on amount of mobility the patient wishes to have during charging. An alternate embodiment uses magnets to secure an external antenna over a metallic segment of an IMD.