Vuam hnab looj tes yog cov khoom siv tiv thaiv tus kheej uas tiv thaiv tus welder tes los ntawm vuam phom sij. Cov hnab looj tes no tso cai rau cov ntiv tes sib koom ua ke thaum tiv thaiv tus neeg teb xov tooj los ntawm hluav taws xob poob siab, huab cua sov, thiab UV thiab IR, thiab muab kev tiv thaiv kev puas tsuaj thiab txhim kho tuav.
Nws feem ntau yog ua los ntawm cov khoom tawv tsiaj, xws li cowhide lossis pigskin. Rau ib tus neeg cov hnab looj tes ntau yam uas xav tau kev hloov pauv siab, cov tawv yaj yuav siv.
Cov khoom tseem ceeb ntawm cov hnab looj tes vuam yog tawv los yog tawv nqaij, uas yog los ntawm cov hides ntawm ntau yam tsiaj nyeg. Nyuj, mos lwj, elk, tshis thiab npua hides muab ntau theem ntawm kev nplij siab, feem ntau nyob rau hauv stark sib piv rau lub hnab looj tes lub durability. Daim ntawv thov feem ntau txiav txim siab cov khoom nyiam, thiab cov hnab looj tes vuam feem ntau muab faib ua peb theem ntawm kev nplij siab / kav ntev. Cov hnab looj tes no tau cim nrog tus kheej cov qauv vuam thiab tuaj yeem siv rau ntau yam txheej txheem vuam.