Kev hnav tsis kam ntawm lub taub hau rauj muaj kev cuam tshuam zoo rau lub neej kev pab cuam ntawm claw rauj, yog li cov chaw tsim khoom ntawm cov rauj yuav tsum sim ua kom nws hnav tsis kam.
Txhawm rau txhim kho qhov hnav tsis kam ntawm claw rauj rauj, kev saib xyuas yuav tsum tau them nyiaj ntxiv rau qhov hardness ntawm carbide, uas tuaj yeem txo qhov khawb thiab txhim kho cov duab ntawm cov carbide, ua rau nws los ntawm ib qho thaiv mus rau ib lub kheej kheej lossis ze li ntawm cov duab kheej kheej, txo qhov muaj peev xwm ntawm kev sib deev. Vim hais tias lub taub hau rauj tsuas yog ib feem ntawm lub claw rauj, nws yuav tsum muaj zog hnav tsis kam thiab muaj peev xwm tawm tsam tawv. Yog hais tias nws tsis yog tsuas yog siv rau striking rauj, nws yuav tsum tau ntau dua hnav tsis kam.
Thaum siv lub claw rauj rub tawm cov rau tes, koj tuaj yeem muab cov ntoo thaiv rau ntawm claw horn kom nce lub zog rub. Lub claw rauj yuav tsum tsis txhob siv los ua ib qho cuab yeej prying. Ua tib zoo mloog rau lub tiaj tus thiab tsis zoo ntawm lub rauj kom tiv thaiv cov ntsia hlau los ntawm ya tawm lossis rauj los ntawm kev ntog. Mob.