Abstract: A universal tilt base accommodates general-purpose router motor housings with diameters of 3-1/2 inches and larger. The motor housing is received by a collar tiltingly attached to a table base with an aperture, so that when a cutting bit attached to the router motor, the bit protrudes through the aperture to effect a workpiece, with means to independently adjust both the depth and tilt angle of the cutting bit. In the preferred embodiment, the collar is configured to accommodate router motor housings which either slide without rotation to adjust cutting depth and those which may be rotated during depth adjustment. To accommodate at least two of the types which do not rotate during depth adjustment, the collar is configured to receive motor housings having an at least one outward protrusion.