Re: Y axis drifting on BF20L (G0704). Source of problem spotted. Looking for better f
Threading the dimples won't solve the underlying issue of the screw backing out and your removing material from the shaft far in excess of what's needed for a small flat to have a chance of getting even a turn or two of full thread. The flat will do the job quite acceptably without the hassle of threading a hole provided a little blue Loctite is added.
CNC: Making incorrect parts and breaking stuff, faster and with greater precision.