It's all to do with the font selected, you need a true type because you need an inner and outer.

This is the capital letter O done in different fonts and cut wiyj a vee cutter with a 0.75mm flat on the end which works out correct for 10mm high letters.

Obviously some experimentation is needed.



Depending on how close the inner is to the outer determines the depth, 3rd. 4th and 5th from the left are equal depth as these fonts are offset the same all round.

1st font is narrower at the top than the sides and 2nd is the best example. 6th font is that close to the top compared to the sides it hasn't cut all the way round.

This was done on purpose so you can see what effect the flat on the bottom has.

If this had been reduced from 0.75 to say 0.5 then it would have looked like No 2 but No 2 would then look like No 1


One thing with V Carve is it's very WYSIWYG on the preview and it pays to play what if ?