Isku-darka taxanaha SYLD-ka ee qoda-gooya waa isku-darka toosan oo gaar ah oo ku habboon isku-darka walxaha si fudud loo isku dari karo (sida fiber ama qoyaanka si fudud loogu milmi karo), isku-darka walxaha budada leh dareere xumo, isku-darka walxaha fiiqan, isku-darka budada leh isku-darka dareeraha iyo isku-darka dareerayaasha fiiqan ee hooseeya. Isku-darka wareegga iyo jarista duulista ee kaalmeeyaha ah saamaynta isku-darka xiirashada ee awoodda leh, dhammaystir wax-soo-saarka isku-darka ee aadka u fiican. Si ballaaran ayaa loogu isticmaalaa dhoobada dhoobada ah, walxaha adkaysiga leh, walxaha u adkaysta xirashada, carbide sibidhaysan, waxyaabaha lagu daro cuntada, hoobiye isku dhafan oo diyaarsan, tignoolajiyada bacriminta, daaweynta dhoobada, caagga iyo balaastikada, kiimikooyinka la dagaallanka dabka, agabka dhismaha gaarka ah iyo warshadaha kale.