Waxaan samaynay khad soo saar galaas oo daboolan oo toosan iyo mid toosan si loo daboolo baahiyaha macaamiisha kala duwan. Mashiinnada waxaa loo isticmaali karaa in lagu sameeyo galaas aluminium ah oo daboolan oo dhaqameed iyo galaas dahaaran oo aad u weyn.