Breaking closed vectors

[WillAdams (William Adams (Carbide 3D))]

Please see a previous example at:

Deleting line help

[Screenshot (69)] I’m trying to delete this line but I cant figure out how. I tried the boolean subtraction but it’s deleting most of the cows.

c.f., Vee bit cutting accuracy issues - #15 by WillAdams

If you’ll post your file we’ll gladly work up a step-by-step tutorial for you.