I got a set of inexpensive V-bits ranging from 60 to 150 degree full-angle. They are not great (kind of dull) but may be useful. I used them, and a 10-degree taper bit, to make a couple of example boards showing the biggest lettering you can V-carve with them in one pass (i.e. the diameter of the bit).
This was after my recent upgrade of the Z-axis to a closed-loop stepper and controller, and you can really see that in the video of the 10-degree taper bit, which does a lot of deep plunges. The 60-degree bit was very dull out of the box, burning the wood and making a lot of tear-out in this soft plywood. I may try this again after attempting to sharpen the bits and using harder wood.
For those who love to watch the chips fly, here are the unedited actual-speed videos:
Here is the .crv file I made for this project, in case you care about the feed rates etc.
VcarveExamples.zip (651.9 KB)