一, Nkọwa mmepụta: 

Nkwọ aka nwere otu ọnụ na-enwekarị eriri, aka na akụkụ njikọ. Osisi nkwọ ahụ na-adịkarị gịrịgịrị, nke obosara na-agafeghị oke ma dịkwa obere. Nhazi nke otu ihu na-eme ka ọ dị iche na omenala ihu abụọ n'ile anya. Ejiri ergonomics mee ihe ahụ, na ọdịdị ya na nha ya dabara adaba maka ijide aka mmadụ, na-enye ahụmịhe ọrụ dị mma.

eji : 

1: Na woodworking, otu onu aka saws nwere ike iji igbutu osisi, mee mortise na tenon owuwu, ịrụ ezi ihe osise, wdg.

2: Enwere ike iji saws aka nwere otu ọnụ iji bepụ ọkpọkọ, mezie alaka, mee ka arịa ụlọ dị mfe, wdg.

3: Ọ nwere ike n'ụzọ ziri ezi bee dị iche iche ihe na-emepụta ezi nlereanya akụkụ, nke na-enye oké mma maka nlereanya ime.

三, Performance nwere uru:

1: Ebe ọ bụ na e nwere serrations naanị n'otu akụkụ, ebe kọntaktị dị n'etiti agụba na ihe ahụ dị ntakịrị n'oge usoro ịkpụ, nke na-ebelata nkwụsị nke esemokwu, na-eme ka ịkpụ ahụ dịkwuo nro ma na-emeziwanye nkwụsị nke ọma.

2: Nkwọ aka nke otu ọnụ na-enwekwa ike ịkpụcha ihe dị iche iche nke ọkpụrụkpụ. Site n'ịgbanwe akụkụ nke ịkpụ na ike, a ga-egbutu efere ndị dị gịrịgịrị ma sie ike n'ụzọ dị mfe.

3:  A na-ejikarị ọrụ mgbochi mwepu emebere aka nke otu ihu igwe, nke nwere ike imezi nkwụsi ike nke njide nke ọma ma belata ihe mberede nke mpụ aka kpatara.

四, Usoro njirimara

(1) Iji meziwanye nguzogide iyi na nguzogide corrosion nke agụba, ụfọdụ nkwọ aka nwere otu ọnụ na-eji ihe alloy pụrụ iche dị ka nchara dị elu, nchara tungsten, wdg.

(2) Iji mee ka ike sie ike ma na-eyi nkwụsi ike nke ezé ịhịa aka n'ahụ, a na-emenyụ agụba ahụ.

(3) Iji mee ka ọrụ mgbochi nkwụsị nke aka ahụ dịkwuo mma, a na-ejikarị agwọ ọrịa na-edozi elu nke aka ahụ.

(4) The ndokwa ziri ezi nke hụrụ ezé dịkwa ezigbo mkpa, nke na-emetụta kpọmkwem mbepụ arụmọrụ na ọrụ ndụ nke agụba.