Jekiseni yakaumbwa ferrite magineti, akasungirirwa magineti eferrite, ndiwo magineti echigarire eferrite anogadzirwa nemaitiro ejekiseni. Permanent ferrite poda yakasanganiswa ne resin binders (PA6, PA12, kana PPS), inoteverwa nekuiswa jekiseni kuburikidza ne mold, magineti akapera ane zvimiro zvakaoma uye yakakwirira dimensional kurongeka.