Select the inner border and all the text:
If you were cutting would, it would work to set up a V carve toolpath:
Since you’re cutting Color Core, you’ll want to use square tooling:
Since the large tool leaves material uncut, use REST machining if you have Pro:
Note that even a 2mm tool is still too small, so you should either make a larger sign, use a different font, or source a yet smaller tool (which may require adjusting the Depth per Pass).
If you don’t have Pro, add offset geometry to isolate regions which can be cut with each size tool.
For a bit on that see:
Attached as a v8 file.
Fuel Cell_v8.c2d (592 KB)