Many growers are choosing to transform their bud into rosin is that the rosin extraction process is completely solventless. rosin press machines are more and more popular. Rosin extraction is safe and easy for both home and commercial growers because it doesn’t require any solvents with which to extract cannabinoids, nor does it require extensive safety measures as some other extraction methods do. But for rosin extraction to be most efficient – and produce the highest yield – professionally designed rosin presses are ideal.