Jul 10, 2012 · Features of Straight Knife Cutting machine: The main parts of this machine are straight knife, electric motor, handle, grinder, base plate, stand/ knife holder, lubricating unit, wheel etc. Could be used to cut higher depth of fabric. Knife height is 10 cm to 33 cm. Knife stroke is 2.5 cm to 4.5 cm. Motor r.p.m. is 3000 to 4000.