Feem ntau cov pob zeb ntawm lub puam yuav tsis zoo, tab sis muaj ntau yam uas yuav. Cov tawv pob zeb txhuam qhov zoo tshaj plaws - cov uas zoo li yuav luag ci iab twb. Tsis lees txais cov pob zeb uas zoo nkauj, lawv yuav nyuaj, tab sis yuav tsis txhuam.
Ib txoj hauv kev tshuaj xyuas lub pob zeb tawv yog txhawm rau txhawm rau khawb nws nrog tus cwj mem sau ntawv. Yog tus riam txiav lub cim lossis tsim cov kab ua hmoov, ces lub pob zeb yuav tsis txhuam. Yog tias riam riam tawm cov kab hlau, tom qab lub pob zeb yuav tawv dua li hlau, thiab nws yuav txhuam. Qhov no tsis yog hais tias cov pob zeb softer, xws li serpentine, tsis tuaj yeem polished, tab sis lawv tsuas yog yuav tsum tau polished nrog lwm lub pob zeb ntawm cov tawv zoo sib xws thiab tsis tov nrog pob zeb nyuaj.
Tumbling lub sijhawm yuav luv dua nrog lub pob zeb softer, thiab lub sijhawm kaw yuav tsum khaws cia ntawm lawv, vim tias nws yuav tsis siv sijhawm ntev los tsoo thiab txhuam lawv. Xaiv cov pob zeb uas feem ntau 1 nti inch lossis me dua, ib lossis ob lub pob zeb loj dua tuaj yeem ua polished hauv lub nra uas feem ntau cov pob zeb me.
