Lub saw yog ib qho cuab yeej siv los txiav lossis saw ntoo lossis lwm yam khoom siv los ua tiav. Lub saw hniav thiab pom lub cev yog tsim los ntawm cov hniav tsis sib xws.
Hauv kev txiav txim siab dav dav, nws feem ntau yog hais txog lub cuab yeej uas cais cov khoom los ntawm kev rov ua dua ntau cov ntsiab lus sib cuag nrog lub siab loj uas tau teem rau hauv ib kab. (raws li qhov txawv ntawm riam thiab cov ntaub ntawv) Cov ntaub ntawv muaj xws li woodworking saws, disc saws, band saws, hlau saws, thiab lwm yam.
Muaj ntau hom saws, uas tuaj yeem muab faib ua kab rov tav saws (rau sawing ntoo), jigsaws (tsuas yog siv rau sawing ntoo raws li ntoo grain) thiab khawb saws (tseem hu ua hlau saws, feem ntau yog siv rau sawing) Raws li qhov loj me. ntawm sawtooth, nws muaj peev xwm muab faib ua ntxhib sawtooth (tsim rau sawing loj thiab tuab ntoo), nruab nrab sawtooth (tsim rau sawing ntoo ntawm dav loj thiab tuab) thiab nplua sawtooth (tsim rau finer sawing). txiav); Raws li nws cov duab, muaj thav duab saws thiab vaj huam sib luag saws. Cov saws tau muab faib ua cov saw loj, ob lub saw saw me, saws me me, cov saw saws tes, saws tes, saws saws, riam saws, qhov loj tshaj yog 3--4 meters ntev.
Niaj hnub no, thav duab saws tseem dav siv rau hauv paus sawing ntawm cav thiab lumberyards. Cov ntaub ntawv niaj hnub ntawm Egyptian saws tseem siv los ntawm cov kws ntoo rau kev ua haujlwm zoo. Muaj ntau ntau hom saws ua rau sib txawv, qhov sib txawv tseem ceeb yog qhov loj ntawm cov hniav thiab tus naj npawb ntawm cov hniav. Cov hniav loj uas muaj cov hniav tsawg dua yog qhov zoo rau kev ua haujlwm, thaum cov hniav zoo nkauj siv rau kev txiav kom zoo dua thiab huv dua.
