A quick and dirty solution that gets you in the ballpark; cut a piece of wire coat hanger and chuck it in the spindle. Bend it into a Z shape such that the end pointing down at the table is off set 4" to 6" from the spindle centerline. Lower the chuck down towards the table and spin the spindle by hand. If there is any variance in the dimension between the wire end and the table, the spindle needs to be adjusted (trammed). Worked on my old drill press with a tilt table. On a wooden CNC, will get you close enough on your spindle alignment.