3d printer

A 3D machine tool for the purpose of manufacturing a part comprising:

• a minimum of two controllable motions:
• a first motion and a second motion;
• a build surface to which the part is directly or indirectly affixed;
• and a machine tool head;
• wherein the improvement comprises:
• the first motion is a rotary motion around a first axis;
• the second motion is a rotary motion around a second axis, wherein the second axis is parallel to and offset from the first axis;
• wherein the first axis revolves around the second axis;
• the build surface is driven in the direction of the first motion and the build surface is normal to the first axis;
• and
• the build surface is rotated about the axis of the second motion;
• such that, responsive to the first and second motions, the machine tool head is positionable relative to the build surface over a continuous planar tool range area of the build surface, at a machine tool head distance from the build surface wherein the machine tool head distance is measured normal to the build surface.