The best inexpensive spindle I've found is the er16 spindle made by Sherline. I bought two and both had less than .0005 runout 1/2" from the collet end. Certainly these are not for hard work but if you have enough time and are looking strictly for precision, it can't be beat for the price. Cheap speed would be a mini mill head from littlemachineshop.com with some work. Never a dremel. |