Did you doublecheck that the measured bit diameter matches what was specified in VCarve? Using a 3/16 bit when you specified 1/4 could cause this, for instance.
Also, in VCarve, you have choice of cutting inside, outside, or along a vector. You need to choose the appropriate one.
Also, in VCarve, you have choice of cutting inside, outside, or along a vector. You need to choose the appropriate one.