So, the logo you want to carve is relatively small, I see it’s about 75mm x 40mm
That number of letters within that small-ish area means that to get a reasonably precise carve you’ll need to go with more acute vbit angles, like @Gerry said.
In theory, you can use a given depth limit (specifically in Advanced v-carve) and you could use a 90° bit, but in practice, the wider the vbit angle, the more small depth error show in the result (i.e. a 0.1mm depth error will translate to a much “wider” slot when using a 90° vbit, that when using a 30° vbit)
Then, whatever vbit you end up using, this photo tells me a few things. First, you probably need to have go a tighten thing up a bit, those top angled lines should be perfectly straight and they are not:
which is probably an indication that some v-wheel needs tightening, and/or belt need tensioning, and/or feeds and speeds needs adjusting.
Second, that lower left corner is a bit “too” rounded,
which can happen if your Z zero is not quite perfectly set OR is your stock is not perfectly flat to being with.
- for setting Z zero for vcarve, there are two pitfalls: if zeroing manually using the paper method, the first pitfall is jogging a bit too low, and since the vbit is so pointy, one can easily dent the surface without noticing, and then the Z zero ends up being set a little too low. The second pitfall is that a vbits are not infinitely pointed, and some even have deliberate flat on their tip, so again you need to artificially raise the Z zero by a hair, to compensate for that (which means, zero normally, then jog up by a small amount which is the height of the “missing” tip, and reset Z zero only
- running a surfacing pass over the stock surface BEFORE setting zeroes and running the vcarve toolpath goes a long way to remove uneven depth issues. The smaller and more precise the vcarve needs to be, the more mandatory this becomes. In wood, it’s easy anyway so I really recommend doing that, it will help immensely to get a perfectly even vcarve.
long story short(er):
- run a surfacing pass
- zero as precisely as you can off that freshly surfaced area
- use a 30° vbit (or at least 60° if you have a #302 and don’t have a 30° vbit?)
- you may or may not need to leverage advanced v-carve. I say try with a regular vcarve first, it seems to me that the “v grooves” look is what you are after anyway in this project.
- run the vcarve toolpath a second time without changing anything, that usually clears up any fuzzies
- and finally, set your depth per pass to about 1mm rather than 2mm (on your file you have 1.27mm for the adv vcarve, and 2mm for the regular vcarve, and ~1mm will be more conservative in hard wood and help minimize defects)