TP are his initials.
As he said, draw at full size in model space, you don't want to use paper space for cnc use. You should also always save as v12 .dxf for best compatibility.
As for text, you need to use the Express Tools TextExplode command, not the regular explode. Express Tools aren't installed by default, so you may need to do a re-install if you don't have them. You'll probably also want to do some cleanup after using TextExplode,
For filled text, you'll either want to pocket it, or V-Carve it. You'll probably want to use another CAM program for that.
A workaround would be to fill it with a dense hatch in AutoCAD, and explode the hatch, leaving lots of lines inside the text.