![]() A fine feed on the Z axis is pretty hard to do without, I cast mine out of aluminum and use brass bearings for thrust adjustment for the fine feed, It is also designed to put a stepper motor for CNC if desired.The items below are nice but not absolutely necessary.some method of locking the spindle, I use the center point setscrew on the added gib if there is room for it.If i can't find an older American cast 6x 12 or 18 x-y table I buy an asian table and upgrade the bearings and tighten the scroll nut to remove as much backlash as possible from the lead screws. I then mount the x y table directly to the base. I cut the total height down remount the head using a gib to make the head more rigid on the column I also gib the spindle to remove the excess slack in the spindle. Most drill presses mount the table on the column and the end result isn't rigid enough. I have found that the table on the drill press isn't ridged enough for mill work this won't be an issue if the table is rigidly mounted on ways.I go to a ER25 or 30 series collet systems with the proper Morse taper and either use a draw bar or a lock pin to retain the taper.This resolves the side thrust issue on the bearing. Replace the lower spindle bearing with an angular contact double row bearing.There are a few things that MUST be addressed. I have successfully converted multiple drill presses to mills.
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