Meesha firfircoon ee wax-soo-saarka, qaabaynta cirbaddu waxay u taagan tahay sidii farsamo dhagax-geeseed ah, oo u beddelaysa balaastiig cayriin oo u beddelaysa qaybo badan oo qalafsan oo shaqaynaysa. Sida soo saaraha hormuudka u ah agabka noolaha, balaastigga injineernimada, isku-dhafka polymer-ka gaarka ah, iyo alloys caag ah, ...
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