Kugwa

Gusoza imashini, bizwi kandi nka tumbling cyangwa rumbling, ni uburyo bwo koroshya no gusiga irangi ahantu hagoye ku bice bito, nk'uko bikorwa mu buryo bwitwa barreling, cyangwa barrel finishing.

Imashini zikoreshwa mu gutwika, gukuraho ubushyuhe, gusukura, gukuraho imirasire, gukuraho ubushyuhe, gukuraho ingese, gusiga irangi, gukonjesha, gukomeresha ubuso, gutegura ibice byo kurangiza, no gucamo ibice by’icyuma.