Ubwino wa zitsulo zothamanga kwambiri zodula masamba:

Kuthamanga kwa macheka kumathamanga, kudula bwino kumakongoletsedwa, ndipo ntchito yabwino ndi yayikulu; kupotoza kwa tsamba la macheka kumakhala kochepa, gawo la chitoliro chachitsulo chodulidwa liribe ma burrs, kulondola kwa macheka kwa workpiece kumapangidwa bwino, ndipo moyo wautumiki wa tsamba la macheka umakulitsidwa.

1. Njira yocheka mphero yozizira imatengedwa. Njira yocheka imapanga kutentha pang'ono, komwe kumapewa kusintha kwa kupsinjika kwamkati ndi kapangidwe kazinthu pagawo lodulidwa. Panthawi imodzimodziyo, tsamba la macheka limakhala ndi mphamvu yaing'ono pa chitoliro chachitsulo, chomwe sichidzapangitsa kuti khoma la chitoliro likhale lopanda mawonekedwe.

2. Ubwino wa odulidwa kumapeto kwa workpiece kukonzedwa ndi mkulu-liwiro zitsulo ozizira kudula macheka ndi zabwino: wokometsedwa kudula njira amatengedwa, gawo pambuyo kudula ndi mwatsatanetsatane mkulu, palibe burrs mkati ndi kunja, kudula pamwamba kumakhala kosalala komanso koyera, ndipo palibe njira yotsatirira monga lathyathyathya chamfering yofunikira (kuchepetsani mphamvu yokonza ndondomeko yotsatira), imasunga ndondomeko ndi zipangizo; workpiece sichidzasintha zinthu chifukwa cha kutentha kwakukulu komwe kumapangidwa ndi kukangana; kutopa kwa wogwiritsa ntchito kumakhala kochepa, ndipo macheka amatha bwino; palibe phokoso, fumbi, palibe phokoso panthawi yocheka; kuteteza chilengedwe ndi kupulumutsa mphamvu.

3. Moyo wautali wautumiki, mungagwiritse ntchito makina opangira macheka kuti mupukute mano mobwerezabwereza, moyo wautumiki wa tsamba la macheka mutatha kupukuta ndi wofanana ndi wamtundu watsopano. Limbikitsani kupanga bwino komanso kuchepetsa ndalama.