1.Impahla yekhwalithi ephezulu.Lawula ngokuqinile ikhwalithi, isicwebezelisi esihle.
2.Ukusebenza ngokucophelela.Ukwelashwa okungaphezulu kuyashelela ngaphandle kwama-burrs, kuqinile futhi kuzinzile.
3.Sekela ukwenza ngokwezifiso.Kungenziwa egcizelele ngokuvumelana nezidingo zamakhasimende of Ukucaciswa ezihlukahlukene, materials.
4. Ukumelana nokugqwala okuqinile nokumelana nokugqoka.Akulula ukugqwala.
1. Ukuzikhiya okuhle, ukuphepha okuphezulu.
2. Impilo ende yesevisi, ukumelana nokugqoka.
3. Ukumelana nokugqwala okuqinile.
4. Iyathengeka.