A Techno tool carousel has 8 positions for holding tools. It's mounted to one end of the gantry, and will rotate to the correct position so that the spindle can pick up the required tool.

Flashcut Tool Macro

Routers that are controlled with the Flashcut controller require a custom macro to run whenever a tool change (M06) is requested. The macro is below.

In addition, you need to define several User Defined Variables to set up the carousel positions.