Impact Resistant Head - A positive locating joint between the axis 5 arm and the rest of the machine.  Decreases the amount of force applied to the head in the event of a collision, diminishes the need for realignment and reduces fixture and spindle damage.

Thermwood Continuous C-Axis Rotation with Impact Resistant Head on Model 67 - Video Demonstration

For the first time offered together, the Thermwood Continuous C-Axis Rotation and Impact Resistant Head. The Continuous C-Axis allows the machine to perform complex motions that require multiple rotations of the C-Axis, and then quickly return to home. With the Impact Resistant Head, the machine stays in tram even after a crash of the head.