I recommend face shield over safety glasses when cutting metal. So the question is which metal cutting blade is the best and why Makita has the slowest RPM at 3,700 rpm and why do you have Makita??? That Oshlun blade states 4,600, my Ryobi and Dewalt is over 4,600 RPM, I usually use Diablo Cermet II blade with 48 teeth at almost almost double the cost......
