Umatshini wokwenza iibheyile ophathwayo we-GMM-H okwaziwa ngokuba ngumatshini wokwenza iibheyile ngesandla uhambisa ii-chamfers ezibanzi ukuya kuthi ga kwi-15 mm, uhlengahlengiso oluqhubekayo lwe-engile ukusuka kwi-15 ukuya kwi-60 degrees. Ulungiselelo lwesiphatho se-ergonomic ukuze ukhokelwe lula ngee-roller zesikhokelo, uthwale ukuze usebenze.
