How do I cut a 16mm 45 degree slope on the sides of a 48mm high square block?

[Julien]

I would do a contour cut like Gary mentions, but since a vbit’s tip is not really cutting anything (considering the speed of the cutting edge is almost zero there), a possible refinement consists in using an offset contour and a larger depth (with a little bit of math involved), as in:

Chamfer question

I’ll add that technically the point of a (perfectly pointy) vbit has a cutting speed of zero, which is not great for cut quality. So sometimes it is worth offseting the contour toolpath by a certain amount, and increasing the Z depth accordingly, such that the chamfering action happens using the “middle” of the vbit cutting edge. For a 90deg vbit the compensation is easy (for other angles you need to throw some more math at it) [image001] But then again, in wood it does not really matter and …