WP421AA na-anakọta onye na-ebufe mgbali elu na oke okpomọkụ ya na ihe ndị nwere mmetụta mmetụta dị elu na-eguzogide, yana nyocha ihe mmetụta nwere ike ịrụ ọrụ nke ọma ruo ogologo oge na oke okpomọkụ nke 350.℃. A na-eji usoro ịgbado ọkụ laser oyi n'etiti isi na shei igwe anaghị agbaze kpamkpam n'ime otu ahụ, na-eme ka nchekwa nke nnyefe n'okpuru ọnọdụ okpomọkụ dị elu. A na-ekpuchi isi nrụgide nke ihe mmetụta na sekit amplifier na gaskets PTFE, a na-agbakwunyekwa ọkụ ọkụ. Oghere ụzọ dị n'ime na-ejupụta na ihe mkpuchi ọkụ na-arụ ọrụ dị elu nke aluminom silicate, nke na-egbochi ọkụ ọkụ ma na-eme ka ọrụ akụkụ sekit amplification na ntụgharị na-ekwe ka okpomọkụ.