Lub thawv ntim kaw yog ib hom ntawm cov hlau ntim. Qhov tseem ceeb hauv kev tsim khoom yog xaiv cov khoom qub thiab kev siv tshuab. Kev xaiv ntawm raw cov ntaub ntawv yooj yim dua thiab yooj yim, tab sis rau kev siv tshuab, nws yuav tsum muaj kev txawj ua haujlwm. Ib qho tseem ceeb tshaj plaws hauv cov txheej txheem ntau lawm yog txheej txheem polishing.
Hauv cov txheej txheem polishing ntawm cov hlau nruas kaw, ob theem yuav tsum tau sau tseg, ib qho yog polishing, thiab lwm qhov yog sib. Thaum polishing, cov lus qias neeg tsis xwm yeem ntawm cov hlau nruas yog tsuas yog tshem tawm, thiab lub teeb yuav tsum tau ua los ntawm cov txheej txheem tshwj xeeb kom nws muaj daim iav nyhuv.
Them sai sai rau kev saib xyuas ntawm lub kaw hlau drums yuav. Txau cov tshuaj ntxuav tawm los yog ntxuav cov hmoov ntawm daim ntaub mos muag nrog dej me me, tom qab ntawd so nws, tom qab ntawd ntxuav nws nrog dej huv, muab nws sab nraum zoov, thiab qhuav qhuav. Tsis txhob muab cov thoob ntab ntab hlau rau hauv ib qho chaw tsis noo. Yog tias nws tsis raug nrog huab cua, lub thoob ntim hlau yuav xeb nrog dej noo.
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