1. Sukura ahantu hasi hazashyirwaho igorofa yazamuye, urebe ko ubuso buringaniye kandi bwumye. Igorofa igomba kuba isanzwe ifite urwego rwa sima iringaniye, hamwe nuburebure bwuburebure bupimwa ukoresheje umutegetsi urwego rwa metero 2 munsi ya mm 4.
2. Shira akamenyetso hanyuma ushireho utwugarizo dushyigikiwe hasi.
3. Shyiramo utwugarizo dushyigikiwe kumwanya wabigenewe, shyiramo ikadiri, kandi uhindure uburebure bwimiterere yose yingoboka.
4. Kusanya ibiti byingoboka, ubihindure kugirango ube urwego (urwego rwa laser rurasabwa), hanyuma komeza imigozi kugirango urinde ibiti.
5. Shyiramo imbaho zo hejuru, ukata impande zose nkuko bikenewe.
6. Nyuma yo kwishyiriraho igorofa irangiye, shyiramo basebo kugirango urinde kandi ushimishe impande zurukuta.
7. Sukura hasi hasi nyuma yo kubaka.
