
Many builders I follow on Instagram feature Amana CNC router bits extensively and based on their recommendation I purchased the 45771-K 30 degree .005 bit. I wanted to engrave the control panels I'm making for a cigar box, bluetooth speaker, and guitar amp assembly. It took an extremely long time; Watch. On the second try I followed Amana's feeding recommendation. The tip broke after ten minutes. From what I've read, Amana's beats are the best. There are a few manufacturers with a good reputation. The low rating is directly related to my only experience.