Good point, I never did mention the final bit I used. I will add that to the tutorial. I ended up using the .1mm 20deg bit in the inventables pack, it seemed to give me the most consistent results. I got a single set of .1mm 10deg bits off amazon, and if you looked at them funny they would break. The 20deg and higher bits seemed to withstand a little more abuse, like milling too fast or too deep, without immediately breaking or dulling.
I didn't go over the isolation only, because the non-copper tool cuts out the same area the isolation would. If you used the isolation tool along with the non-copper for only the center, instead of making alot of non-copper regions like in the tutorial, it ends up going over the same areas twice for the majority of the board.
If you want to do isolation only, at the very beginning of step 5, instead of scrolling down to non-copper region, you can go to the isolation routing, insert your tool parameters, and click generate geometry.
You can then go back to the project tab, select your FILENAME_iso, back to the selected tab, and insert your cutting parameters, and click generate.
Lastly, switch back to project tab, select FILENAME_iso_cnc, back to selected tab, and at the bottom export your G-code
I will definitely add this to the tutorial, since I know a fair number of boards are only going to use isolation routing and won't need to use the non-copper tool. Thanks for pointing that out.