1. Teeb meem khoom siv. Hlau tsis xeb yog ib hom hlau uas tsim los ntawm kev sib xyaw thiab tso cov hlau ore, cov khoom siv hlau (cov khoom sib txawv ntxiv cov ntsiab lus nrog cov khoom sib txawv thiab qhov sib piv), thiab nws kuj dhau los ntawm ntau cov txheej txheem xws li dov txias lossis dov kub. Thaum lub sijhawm no, qee qhov tsis huv yuav raug ntxiv tsis raug, thiab cov tsis huv no me me heev thiab koom ua ke nrog cov hlau. Lawv tsis tuaj yeem pom los ntawm qhov chaw. Tom qab sib tsoo thiab polishing, cov tsis huv no tshwm sim, tsim ib qho pitting pom tseeb heev feem ntau yog tshwm sim los ntawm 2B cov ntaub ntawv, uas yog cov ntaub ntawv matte. Tom qab sib tsoo, qhov ci ntsa iab ntawm qhov chaw, qhov pom tseeb dua qhov pitting.) Tsis muaj txoj hauv kev los tshem tawm qhov pitting los ntawm qhov teeb meem khoom siv no.
2. Siv lub log txhuam tsis tsim nyog. Yog tias muaj teeb meem nrog lub log txhuam, qhov teeb meem yuav tsis yog tsuas yog qhov pitting, tab sis kuj tseem muaj lub taub hau sib tsoo. [Muaj ntau lub log txhuam ntawm lub tshuab. Nrhiav qhov teeb meem. Txhua qhov chaw, tus kws txhuam yuav tsum kuaj xyuas thiab hloov ib qho los ntawm ib qho. Yog tias qhov zoo ntawm lub log txhuam tsis zoo, ces txhua tus yuav tsum tau hloov! Kuj tseem muaj cov log txhuam tsis sib npaug, uas ua rau muaj kev ntxhov siab tsis sib xws ntawm cov khoom siv, thiab cov teeb meem no kuj yuav tshwm sim!
Lub sijhawm tshaj tawm: Kaum Ib Hlis-13-2023