I am trying to drill .039dia holes (+0/-.0005)thru 3/8" thk G10 material. Some of the hole arrays have only a .006 web between the holes. I am having problems getting them to stay straight. I am center drill them all and have tried almost every conceivable speed/feed combination. I am drilling these on a Mazak CNC mill with a 10,000 spindle (I know, I need more RPMs). I have stub length carbide drills, I am using solid holders (no collets). The plate I am drilling is lifted off the table so the drill does not touch anything as it exits. They just will not exit out straight. Hole size is coming out spot on. I am considering a spindle multiplier, this would give me about 40,000rpm. I really dont want to spend $80k+ for a good router. Any ides??? We have do fixtures here routinely with 3000+ .025dia holes thru 1/4" cast alum with no issues. We cut composite materials here day in and day out (Durapol, Durastone, G10, Glastic, WaveMax, etc.) but this is a new product and these holes are kicking our tails.