Umwoboziracukurwa ku kibaho cyumuzunguruko hamwe nurushinge rwo gutobora umutwe cyangwa icyuma cya gong, ariko ntishobora gucukurwa binyuze (ni ukuvuga igice cyanyuze mu mwobo).Igice cyinzibacyuho hagati yurukuta rwumwobo hejuru yumurambararo / munini wurwobo nu rukuta rwumwobo kuri diametero ntoya ugereranije nubuso bwa pcb.Igice gihuza ibyobo binini kandi bito ni indege, ntabwo ari indege yegamye.

Counterbore ikoreshwa cyane kubibaho byumuzunguruko wicyuma, nka aluminium substrate na substrate y'umuringa.Substrate yicyuma ifite imbaraga zubukanishi kandi ntabwo byoroshye kwangiza imiterere ya PCB.
Umwobo unyuze, nkuko izina ribivuga, nawo unyuze mu mwobo, ushobora kunyura mubintu cyangwa amazi yubunini bukwiye,
Igikorwa ni:
a.Irakoreshwa muguhuza kandi irashobora gukorwa mumutwe unyuze mu mwobo.
b.Kora silinderi ya moteri ya piston.
c.Mubuzima, imyenda nipantaro twambara nabyo ni ingero zinyuze mu mwobo
Umwobo rusange usunika ni umuringa ushyizwe mu mwobo.
Kubera igishushanyo cyihariye cyibirenge, birashobora guhuzwa neza nu mwobo nuburemere bwimiterere yabyo nyuma yo kwinjizwa mumwobo.
Ibyiza ni ukugabanya kugurisha umurongo wo gusudira ibice nkibi;Niba ibyo byobo bidasudishijwe amaherezo, bizoroha gusimbuza ibice.Birumvikana ko gusimburwa inshuro nyinshi bizagira ingaruka ku kwizerwa k'umwobo.
Ibikoresho bya pin bisaba gutobora umwobo mubisanzwe bitangwa nibikorwa byo kwaguka, kuruta imikorere yumurongo.
Ibice bimwe bizongera gusudwa nyuma mugihe ibindi bice bizasudwa, mugihe ibindi bitazasudwa.

Counterbore igabanijwemo amazina atatu:
1. Winjize rwose umutwe wihuta mu mwobo wintambwe wigice, bita counterbore
2. Umutwe wihuta ntabwo wacengewe rwose mu mwobo wintambwe wigice, bita comptersink
3. Umutwe wihuta ntuzarohama mubice ahanini, kandi umwobo ufite ubuso bunini bwigice witwa amafi.
Itandukaniro riri hagati yumwobo wa comptersunk nu mwobo wa konti ni uko igice cyo hejuru cyumwobo wa bolt cyongeye guhindurwa: umwobo wa comptunk ni imiterere ya silindiri igororotse;Umwobo wa Countersunk ni imiterere ya dogere 45, ikaba yoroshye kuruta umwobo.
 
Hejuru yo gusubiramo umwobo wa bolt irashobora kwakira umutwe wa bolt, kuburyo umutwe wa bolt utari hejuru yubuso bukikije.