Qhov no feem ntau nyob ntawm qhov kawg uas peb ua tiav rau cov khoom. Tom qab rub lub taub hau puag ncig, yuav muaj lub taub hau puag ncig ntawm qhov chaw. Tom qab rub lub taub hau countersunk rub stud, qhov chaw tuaj yeem khaws cia kom tiaj tus, tab sis lub hauv paus ntsiab lus yog tias lub countersink yuav tsum tau drilled. Me ntsis teeb meem, nws tuaj yeem ua kom cov khoom zoo nkauj, thiab nws tsis cuam tshuam rau kev sib txuas ntawm lwm cov workpieces ntawm tib lub dav hlau.
Lub sijhawm tshaj tawm: Lub Peb Hlis-31-2022