I have a model that I need to cut in half at a precise location in order for it to be 3D printed correctly. I have used the Zorro2 extension to make the cut. The problem I’m having now is that I cannot seem to accurately separate the model into two pieces. No matter what angle I turn the model or how I drag the mouse to make the selection, I either select too much or too little.
This is something that I need to do often in 3D printing. Ironically, it’s much easier to do this in my slicer, because the slicing tool also closes all of the surfaces after the cut is made. Zorro2 only makes the cut, it doesn’t add interior surfaces (I wish it did).
I’ve attached the skp file. There are two copies of the model in it, the original and one with the slice. How do I select everything above the cut without also touching everything below it?
It also appears that it matters which direction I draw the mouse to make the selection. If I drag from upper-left to lower-right, I select fewer surfaces/edges than if I drag the opposite direction, even the selection box is the same. Is this expected?
I am using Sketchup Make 2017.
fume_extractor.skp (33.1 KB)