Mpeni umapangidwa ndi tungsten carbide, koma zida zina zilipo. Monga HSS, 9CrSi, Cr12Mo, VW6Mo5, Cr4V2, aloyi yolimba, ndi zina zotero. Zopangira zimatenthedwa, zimagwiritsidwa ntchito ndi vacuum, ndipo kuuma kwake ndikwapamwamba. Kutenthetsa mankhwala mufakitale yanu kuti mutsimikizire kukhazikika kwazinthu. M'mphepete mwa mpeni ndi wakuthwa, wosalala, wakuthwa komanso wokhazikika, zida zopangira zinthu zomwe zimatumizidwa kunja zimatha kukonza zinthu zosiyanasiyana zomwe sizili zokhazikika kuti zitsimikizire kulondola kwazinthuzo.