Review on Amana Tool 45705 Carbide Tipped by Issac Smart

I bought this to use with my CNC because everyone loved the Amana bits. Needless to say the first time I used it it was very disappointing. This cracked the wood on the sides of the letters and lost detail due to the flat end. There may be a use for this Amana tool - 45705 V-groove with 60 degree carbide tip x 1/2" dia x 5/8" x 1/4" shank, but it's not for cutting out the letters , for which I need it.