Okhazikika kuti apange zomangira zamphamvu kwambiri & zomangira zapadera za alloy, onetsetsani kuti moyo wothandiza wamakina udzakhala wautali.Kukonzekeretsa injini yojambulira panjira ziwiri zaukadaulo wotsogola, zitha kuwonetsetsa kuti wonongayo imadyetsa mwachangu komanso mwachangu ndi torque yokulirapo, kuti mre kuwongolera kuchuluka kwa pulasitiki.Kutengera dongosolo loyenera kwambiri, monga ndime zamafuta a enlagre ndi bowo lamakina odyetserako chakudya, onetsetsani kukhazikika komanso liwiro likamayenda ndi ma sheet, kuphwanya kapena zida za nozzle.