Mochini oa ho etsa li-roll, re ka etsa lisebelisoa tse ngata
Ho ea ka bophara ba "workpiece" ea "workpiece", ho na le mefuta e mengata eo u ka e khethang. Mochine o nang le mohlala o le mong o ka phalla ka mefuta e mengata ea li-diameter.
Mochini o ka theola lithapo tse fapaneng tsa bophara le mefuta ea likhoele ka ho fetola liforomo (tse ikhethileng, tsa metric, tsa Amerika le inch).
Sets'oants'o sa 20GP se ka kenya mochini o roalang likhoele tse peli kapa tse 3 (ho ipapisitse le mofuta oa mochini), ho boloka thepa.