1. Ua ntej tshaj plaws ntawm txhua qhov, qhov sib txawv ntawm koj laum thiab zoo li qub yog tias koj siv cov hniav peripheral thiab nruab nrab hniav hniav ntawm cov hniav. Txij ntawm no pom, kev sib txheeb ntawm koj laum thiab zoo tib yam laum yog qhov zoo ib yam li ntawm tshuab clamp tig cov cuab yeej thiab vuam tig cov cuab yeej. , Cov hniav tuaj yeem hloov ncaj qha tsis muaj kev sib tsoo tom qab cov cuab yeej hnav. Tom qab tag nrho, kev siv ntawm kev ntsuas cov khoom tsis muaj cov khoom ntim ntau dua li cov khoom siv tsheb, thiab sib xws ntawm cov ntxig ua rau nws tswj tau qhov loj me ntawm qhov chaw.

2. U Laum tau zoo dua rigidity thiab tuaj yeem siv cov khoom noj pub dawb, thiab ua cov kab uas muaj ntau dua li cov laum zoo tib yam, thiab qhov siab tshaj plaws tuaj yeem ncav cuag D50 ~ 60 hli. Ntawm chav kawm, lub laum yog tsis yooj yim sua kom ua vim muaj tus yam ntxwv ntawm cov ntxig. Yog ib yam nkaus.

3. Ur drill tsuas yog yuav tsum tau hloov tib hom thiab qib sib txawv ntawm cov hniav thaum ntsib cov khoom siv ntau yam. Kev xyaum tawv yog tsis yooj yim heev.