The installation of the Kavacha takes place in accordance with the details of the horoscope (birth time and place) and the personal birthstar will be calculated from that. The Kavacha Amulet will be completed within a certain time frame, as mantras have to be recited and a small ritual will be performed for every individual. A Yantra (geometric 2 D form of the divine Power) will be drawn with Astagandha (8 herbs mixture) on Birch bark or engraved with a needle on copper or silver sheets.
Along with the small yantra, the capsule will be filled with holy items like tulasi basil, sandalwood and ashes from a great Mahayagya to Lord Narasimha. After this, the persons name and birth star will be recited, and the protective nature of Lord Narasimha (protector of dharma / righteousness) will be invoked.
There are 3 kind of kavachas available: