Three dimensional tool guide

A three dimensional template tracing tool guide comprising:

• first, second and third elongate guide arms mounted orthogonally and in series so as to provide X, Y and Z axes for said template tracing tool guide, said first, second, and third elongate guide arms being interconnected by a plurality of carriage means allowing free relative movement between said first and second elongate arms in at least one direction, and
• a balancing means to allow substantially unbiased vertical movement for said third elongate guide arm,
• wherein said first elongated guide arm is adapted for mounting to a reference point and said third elongated guide arm is adapted for holding and guiding a tool,
• wherein said third elongate guide arm is provided with a pilot guide means for tracing a template.