Momwe mungasankhire oponya chete

Poyang'anizana ndi malo osiyanasiyana ogwiritsira ntchito, zofunikira za ma casters ndizosiyana. Mwachitsanzo, panja, phokoso laling'ono, palibe kugwedezeka kwakukulu konse, koma ngati kuli mkati, gudumu losagwira ntchito limakhala ndi zofunikira zina. Kugwiritsa ntchito matailosi m'nyumba, kapena matabwa, makamaka ofesi ya ofesi, kotero magudumu ayenera kukhala chete ndi zotsatira zabwino.

Ma casters omwe amagwiritsidwa ntchito kwambiri, nthawi zambiri amakhala ndi ma casters a nayiloni a PA, ma casters a PP, ma casters a PU polyurethane, ma casters a TPR. Ma casters a rabara ndi zina zotero.
Choyamba, tiyeni tikambirane za ma casters a nayiloni a PA ndi ma casters a PP. Mitundu iwiriyi ya ma casters ili ndi kuuma kwakukulu komanso mphamvu yonyamula katundu wambiri, kotero imakhala yokhazikika kwambiri ikanyamula katundu wolemera. Komabe, izi zimabweretsanso vuto la phokoso lalikulu. Chifukwa chake, ngati pakufunika kwambiri kuwongolera phokoso, mitundu iwiriyi ya ma casters singakhale chisankho chabwino kwambiri.

Kenako pali ma casters a PU polyurethane ndi ma casters a TPR. Mitundu iwiri ya ma casters awa ndi abwino kwambiri pakuletsa kugwedezeka, makamaka ma casters a TPR, mphamvu yake yoletsa kugwedezeka ndi yabwino. Izi zili choncho chifukwa kapangidwe ka ma casters a TPR ndi kofewa ndipo ali ndi malo akuluakulu olumikizirana ndi nthaka, zomwe zimachepetsa kupanga phokoso. Komabe, nthawi yomweyo, mphamvu yonyamula kulemera kwa ma casters awiriwa ndi yofooka, ngati katundu wonyamulidwa ndi wolemera, kugwiritsa ntchito kwake kungakhale kovuta.