Do not try this at home. Kama is a very dangerous tool - do not train with kama except under the watchful eyes of a qualified instructor. In addition, NEVER train with sharpened blades of any kind. For information about classes at the Arizona hombu karate dojo, just stop by the school during classes.
Oh, and I almost forgot - if you are tired of running into questionable martial arts teachers and schools in the Phoenix Valley, be sure to Google potential instructors and please compare them what you find about us on Google or Bing. And please search of Soke Hausel for information. We have nothing to hide unlike some other schools in the valley. Soke Hausel also posts copies of certificates in the dojo, so anyone can see his lineage and legitimacy - see if any other dojo does the same?