Izimbobo zokubalaZiqhutshwa ebhodini lesekethe ngenaliti ekhanda ekhanda eliphansi noma i-gong ngommese, kepha ayikwazi ukudonswa (ie, semi ngokusebenzisa izimbobo). Ingxenye yenguquko phakathi kodonga lomgodi e-Outermost / ububanzi obukhulu bomzimba kanye nodonga lomgodi endaweni encane kakhulu yomgodi kufana nobubanzi be-PCB. Ingxenye exhuma izimbobo ezinkulu nezincane iyindiza, hhayi indiza ethambekele.

I-Counterbore isetshenziselwa kakhulu amabhodi wesifunda sensimbi, njenge-aluminium substrate ne-substrate yethusi. I-substrate yensimbi inamandla aphezulu emishini futhi akulula ukulimaza isakhiwo se-PCB.
I-pay-hole, njengoba igama lisho, futhi lingu-ble-hole, ongadlula ezintweni noma ezitsheni zobukhulu obufanele,
Umsebenzi ngu:
a. Isetshenziselwa ukuxhumana futhi ingenziwa ngentambo ngomgodi.
b. Yenza amasilinda ngezinjini ze-piston.
c. Empilweni, izingubo namabhulukwe esikugqokayo nazo ziyizibonelo zezinhlelo zokusebenza ze-pay
I-General Crimping Hole ngumgodi we-plug-emgodini weplanethi yethusi.
Ngenxa yokwakheka okukhethekile konyawo lwento, kungaxhunywa ngokuqinile nomgodi ngokungezwani kwayo kwesakhiwo ngemuva kokufakwa emgodini.
Inzuzo ukunciphisa ukulungiswa kwamagagasi okubekwe ezingxenyeni ezinjalo; Uma izimbobo ezinjalo zingafakwanga ekugcineni, kuzoba lula ukushintshanisa izingxenye. Vele, okunye esikhundleni okuphindaphindiwe kuzothinta ukuthembeka komgodi.
Izikhonkwane zezento ezidinga izimbobo ezibomvu zivame ukuhlinzekwa ngomsebenzi wokunwebeka, kunokuba kusebenze kwentambo.
Ezinye izakhi zizophinde zibhalwe kamuva ngokuhamba kwesikhathi lapho ezinye izakhi zihlanganiswa, kanti ezinye ngeke zibe khona.

I-Counterbore ihlukaniswe amagama amathathu:
1. Shisisa ikhanda eligcwele i-fastener emgodini wegxathu wengxenye, ebizwa nge-counterbore
2. Ikhanda le-fastener alisho lutho ngokuphelele emgodini wesiteji wengxenye, elibizwa nge-Countersink
I-3. Inhloko ye-fastener ngeke icwile engxenyeni ngokuyisisekelo, futhi i-hole kuphela enendawo eyisicaba yengxenye ibizwa ngokuthi yi-WhishHole
Umehluko phakathi kwe-Countersunk Hole kanye ne-Countersersenk Hole ukuthi ingxenye engenhla yomgodi we-bolt iyavutha: I-Countersengse Hole yisakhiwo esiqondile se-cylinder; I-CounterSunk Hole yisakhiwo se-45 degree, esibushelelezi kunesitholi sokubala.
 
Ukuvuka okuphezulu komgodi we-bolt kungahlalisa ikhanda le-bolt, ukuze ikhanda le-bolt lingaphakeme kunendawo ezungezile.