I am new to the cnc world. I am a wood worker and just purchased a china cnc this christmas. Today I was cutting out a heart from a piece of walut when the spindle broke. So I am looking for a new spindle, so could I get some suggestions on what spindle I should get. Money is an issue so I will have to stay with an air cooled one. The one that broke was a 400 w spindle. I would like to go bigger but I do not know where to look or what to look for. So could someone please help me?