Yesterday I made this little shelf to hold my spring seedlings. It has mortise-and-tenon style joints so I can take it apart and rearrange the heights. I wasn’t sure how I was going to cut them out because a round end mill can’t cut 90º inner corners, and they wouldn’t fit together snugly with a radius in the corners.
Most CNC operators probably already know about it, but VCarve has a tool (they call it a Gadget) that will look over your vectors and find any angles that can’t accommodate the tool diameter. It adds a little path to overshoot the corners, turning a 90º angle into a T-shape.
I installed it on the Swift CNC’s computer so others can use it. Vectric’s documentation for using it is pretty straightforward; you can find it under the Gadgets menu.
It’s not fine joinery to be sure, but for a utility project like this I was super pleased. Hope it helps somebody else!