I-1.Ifanele ukunyuswa kunye nokuthutha iiplati zetsimbi, i-constructio kunye ne-profiled bar kwindawo ethe tye.
2. Kuphephe ukuxhwila okanye ukulayisha ukothuka.
3. Umda womthwalo osebenzayo ngumthwalo omkhulu wokuba ii-clamps zigunyazisiweyo t ukuxhasa xa zisetyenziswe ngababini kunye ne-angle yokuphakamisa i-60 degree.Imisebenzi ye-inlifing i-clamps ingasetyenziswa ngababini okanye ngokuphindaphindiweyo.
4. Umhlathi we-screw womzimba unokutshintshwa, ube neqhosha le-satety.