I just purchased this set of drillshttp://www.mscdirect.com/IWCatProduc...3010&Keyword=Y for my lathe. They are 118 degree jober lenth HSS. Only when I attempt to use them as soon as I make contact with the work piece it wonders of center and then it chatters the whole time Im cutting with it. I was drilling a piece of 1/2 dia. aluminum that was being spun in my lathe chuck and the drill was in the tailstock. I was using a very slow feed (by hand) and I had made a centering hole before I attempted to drill. Are these the wrong type of drill bits? Is it the low quality of the bits. Or am I doing something wrong?
James