For my X-Carve CNC I used Yonico 1/8" downcut bits, to cut 1/2 " MDF. I used another Amana bit for a recent project and it worked fine so I bought this bit. Bad move. This bit broke in less than 2 hours of use at reasonable speed. I can't believe a beat that costs half as much can beat this beat so much. Very bad. I don't think I will buy Amana beats again.