He aha ke ʻano o ka lawa ʻole ʻana o nā rivets makapō?

ʻAʻole lawa ka bulging: no ka haʻahaʻa loa o ka haki ʻana o ka rivet makapō, ʻaʻole i hoʻopaʻa piha ʻia ka rivet, a hemo ka wahi haʻihaʻi o ka rivet makapō, e hopena i ka lawa ʻole o ka puʻupuʻu o ka rivet makapō.aia ma lalo o kahi hemahema.

https://www.yukerivet.com/news/how-to-solve-if-there-is-a-penetrating-cavity-left-in-the-riveting-body-after-riveting/