1. Ho sisinyeha.
Ha screw e le mafome, ha e lumelloe ho tlosoa ka likhoka ka wrench. Tlanya screw ka wrench, senya li-sundries sebakeng se mafome, fetola screw ka ho le letšehali le ka ho le letona ka wrench, ebe u ka tlosa screw. E ile ea qhaqhoa.
2. Mollo.
Haeba screw e le mafome haholo, o ka sebelisa welding ea motlakase ho oxidize screw, chesa screw red, ebe o lahlela oli e tlotsang ka har'a lekhalo la screw, ema hanyane, ebe o tlosa screw ka wrench.