Sefako sa rona sa 0.8-1mm se etsoa ka theknoloji ea ho phunya lithunya ea CNC ho netefatsa ho nepahala le botsitso. Bohareng ba likoti bo boreleli ebile ha bo na li-blockages, tse ka ntlafatsang katleho ea tlhahiso ea pellet. Re ka boela ra etsa li-ring dies tse nang le mefuta e fapaneng ea li-aperture, tse etselitsoeng litlhoko tse khethehileng tsa liphoofolo tse fapaneng, tse ka thusang ho eketsa tlhahiso ea pellet. Ho khetha lesale la rona la boleng bo holimo ho tla netefatsa tlhahiso ea li-pellets tsa boleng bo holimo le ho eketsa katleho ea tlhahiso.