V Bit Carving - Why are the corners not square?

[neilferreri (Neil Ferreri Ω)]

@panf Try raising your zero to 1mm (exact would be 0.866mm) .above your surface if you’re flat is 1mm in diameter and you’re using a 60 degree bit.
Link to calculator in this post:

V-Bit Feeds and Speeds

Without seeing the Easel project to compare, I’d say the gcode looks fine. My guess is that your v-bit does not come to a true point. That will cause the carves to be wider than calculated at your desired depth. You’ll have to set your Z0 at an offset above the surface of the wood. The offset depends on the width of the flat spot on your bit. With a 60 degree bit, you should be close by offsetting the slightly less than width of the flat. For exact offset, I whipped up a basic spreadsheet …