Ibyiza:
1. Umuringainywa y'ingurube inyobwa nigishushanyo cyingurube zinywa neza no kubungabunga amazi.
2. Koresha imashini ya CNC yakozwe kugirango umenye neza.Kugirango ubuso bworoshe kandi butagira ingumi,
kurinda umutekano w'amazi yo kunywa.Imiterere yoroshye no guterana byoroshye.
3. Umuyoboro mwinshi wumuringa urinda imiyoboro kugirango umenye neza ko insipo idafunzwe nubutaka.
4. Huza 1/2 '' icyambu, hafi ya 20mm.byoroshye gushiraho, imiterere yoroshye,igihe kinini cyo gukoresha.