Mtm parameter
From Macros Wiki
| Integer Values | Description |
| SPINDLE_USED | Is this spindle used (1 = yes) |
| STOCK_Z1 | Stock Z1 value |
| STOCK_Z2 | Stock Z2 value |
| STOCK_RAD | Stock radius |
| STOCK_DIA | Stock diameter |
| CHUCK_WIDTH | Chuck width |
| CHUCK_PART_LEN | Chuck part length |
| CLEAR_Z | Clear position in Z |
| CLEAR_RAD | Clear radius |
| CLEAR_DIA | Clear diameter |
