I am no expert, but let me take a swing at it. I have three points to make. The first being the most important.
Side note: I had to upgrade to the latest version of Estlcam to open your file.
#1 - VCarve
Personally, when I VCarve, I notice the same behavior. It appears that, generally speaking, Estlcam will carve the majority of something, then, near the end, go back and make these little touch up’s in the “corner of objects”. They do in fact kinda look like little up and down motions. Typically, they are noticeable on the material. Meaning, you do seem them taking out material.
However, I have seen the case where they are so tiny or small, I think “what is it doing? is it confused? why is it moving but not cutting”. My assumption (and I think experience) is that depends on the depth of cut being done. If your depth of cut is small, I think these little touch ups look like they are doing nothing on the material (and may in fact do next to nothing).
In your case you have a depth of cut of 5mm. Which is big. But you have a maximum width of 3.18mm. Because of that, I think your DOC becomes uncertain potentially. I don’t think it ends up being 5mm. It probably is much much less and the little touch ups look like they do nothing and may do nothing.
#2 - Paths
I don’t think this is relevant to your original question, but it looks like you have multiple (identical) toolpaths defined. I suspect this is not your intention.
#3 - Something I have not seen before.
Your E10 file show the following…
But your preview shows the toolpath, but with extra objects that we don’t see when defining the paths. Kinda strange, like the “RETRO DESIGN” does not show in the main drawing only the preview.
Not sure why, probably irrelevant anyway.
