G85: Boring Cycle with Retraction at Work Feed

G85 (X- Y- Z-) or (U- V- W-) R- L-

The G85 cycle is designed for boring, but can also be used for drilling or milling.

The cycle includes the following actions:

1. Preparatory movement described in the section "Canned cycles".
2. Movement along the Z axis with a given feed rate to the Z position.
3. Returns along the Z axis at a given feed rate to level R if it is lower than the original height along Z.
4. Fast travel to return height in Z.