Inyungu:
1.Byakozwe nibyiza 304 ibyuma bitagira umwanda, irashobora kwemeza ko nta ngese, ntizatanga umwanda, ntizahagarikwa.
2. Koresha imashini ya CNC yakozwe kugirango umenye neza.Kugirango ubuso bworoshe kandi budahungabana, kugirango umutekano w’amazi yingurube.Igenamigambi ryo kurinda kugirango umenye neza ko insipo itazafatwa nubutaka.3.Huza 1/2 '' icyambu, hafi ya 20mm.byoroshye gushiraho, imiterere yoroshye,igihe kinini cyo gukoresha.