Urwego rwa aperture rwurusyo rwa pellet rupfa gukoreshwa mubikoresho bya pellet yimbaho iri hagati ya 5.0-18.0mm, naho uburebure bwa aperture, cyangwa igipimo cyo kwikuramo, kiri hagati ya 1: 4-1: 10.
Ikigereranyo cyo guhunika impeta ipfa kumashini ya pellet yimbaho igenwa ukurikije ibikoresho bibisi.Ikigereranyo cyo guhunika cyibikoresho fatizo bitandukanye biratandukanye, ibikoresho bigoye cyane, igipimo gito cyo kwikuramo;ibikoresho fatizo bya fluffier, igipimo kinini cyo kwikuramo .Ni ukuvuga ko ibikoresho fatizo byoroshye byoroshye gukanda no gukora imiterere, ibikoresho fatizo bya fluffier birimo fibre nyinshi, birimo ibintu byinshi bya fibre byoroshye gukora imiterere.