A lesoba conical e khaola ho lumella bataletseng hlooho nsete ho sebediswa e bitsoa lesoba countersink. Ho ka boela la bitsoa ka lesoba conical e khaola ka e PCB laminate, kapa lesoba bōpiloe ke sebelisa tirila. Sepheo se seholo ke ho re hlooho ea nsete countersunk, hang e kenngoa le kaet fi kalbi fatše ka sekoting, ho lula flush le holim 'a laminate ena. The khoune bōpehileng joaloka lesoba, e khaola ka PCB laminate, ke countersink. Ka kakaretso ho sebelisoa ho lumella hlooho tapered tsa nsete ea ho lula flush le holimo kapa tlaase laminate ena.

E haholo-holo a sebelisa, e le hore se bataletseng sa hlooho nsete ka lula flush le holim'a metsi ho ho shebahala e hloekileng le tlhomamiso. Ho etsa bonnete ba moralo nepahetse bakeng sa ho etsa thepa, bahlahisi fetisisa hloka lintlha tse qaqileng tsa ba bophara lesoba. Ba boetse ba hloka ho tseba ha lesoba e tlotsitsoe kapa che. Ho tseba haeba lesoba ke poleiti kapa che, ke mahlonoko tseo ho leng hobane maemong a mang e lesoba unplated ka motheo o tiileng ho moralo wa, e leng ka etsa hore bothata e neng e tla hloka plating ho lokisa. Countersinks hangata na le 82 isa tekanyong kapa 90 lengolo la angle; Leha ho le joalo, le dikhutlo e meng lia khoneha hore moreki tla lokela ho fana ka ho PCB fabricator.

Bakeng sa cheka e nepahetseng ea mekoti countersink, tse latelang e hlokahalang:

▪ Ke mahlakoreng boto ke lesoba countersink lokela ho e ile ea fata, ka holimo kapa tlase?

▪ Na teba le theko ea ho ba teng ka tlotsitsoe kapa batho bao e seng tlotsitsoe?

▪ Taper angle kapa countersink angle

▪ Countersink bophara

▪ Ho se felile bophara ya theko ea lesoba

▪ Botebo ba countersink ke lokela ho e ile ea fata

Mona ka tlase ke papiso eo e fana ka mohlala oa lesoba countersink:

A: Countersink angle, D: Countersink bophara, le d: Hole bophara, H: Hole botebo