The settings he used (and I used the same in my testing) are 381mm/min (15ipm) plunge, 1143mm/min (45ipm) feedrate, and 0.5mm (0.02 in) DOC. The tool is defined with 0 RPM, but Carbide Create spits up an error when you actually try using the tool at 0 RPM, you have to change it to 1 to assign the tool to a toolpath. I used those settings on acrylic and whatever metal a Ball mason jar lid is made out of and got reasonable results.
The 90 degree MC Etcher storage tube is labeled with:
Bit number: #503E
Type: Drag bit
In my opinion you should not declare is as a V, rather as a (very) small diameter square or ball.
And then only use contour/profile toolpath (or texture toolpath), because using a v-carving toolpath will probable not result in what you want.
99% of the time, a profile toolpath “on” a selected vector, with 0.1" depth of cut (single pass) will be the best option for tracing outlines, and a pocket (same DOC, very small stepover) can be used to fill areas
I have the MC Etcher set up as a engraver in CC, not a vee bit. I think of the bit as a pencil more then a end mill. You probably don’t want the 0.25" you have set up as the cutting diameter, that will make pocket operations (to fill an area) difficult. I have the cutting diameter configured as .004" (.1 mm), based on Will’s tutorial.
The heart/paw was filled with a .02" stepover texture in Carbide Create, the label (the name of one of our cats that passed away) is filled as a .008" stepover pocket operation. Everything also gets an outline using a no-offset contour for a well defined edge. I did the outline first because I am impatient and like to see what the design will look like: