What is the different between these two?
Faces = Split Line/intersectionCurves = Intersection Curve
SolidWorks has several confusing terminology overlaps, and this is one of them.
Split Line intersection actually splits faces to make edges.
Intersection curve creates sketch entities, 2D and 3D.
Projected Curve makes curve features.
I tried to split this cylinder face but split line does not work.
Some times some 3D sketches do not recognize by "Sketch to Project" box. I do not know why.
..that is most likely because of a slight inaccuracy with a 3DSketch and the Face.
For instance.. if that 3DSketch was created directly/primary to that Surface Face... it will likely Split the Face....but,.. if that 3DSketch came from a "secondary" feature,.. like a Trimmed Edge from the Face.. then.. the accuracy is not the same.
Ah!,.. I think I see where you are going with this...and forgot.. but now remember... a "3DSketch on a Cylinder".... so, in this case.. there's a "workaround"... you need to "Pre-Split the Cylinder Face",.. and now, you can use your 3DSketch to split the pre-split-cylinder face(s).
Yeah, you can't split a cylinder just once. You have to split it twice. Weird, but I think it's the correct way to handle it. If you only split it once, you have an edge where the same surface is on either side of the edge, which CAD-wise doesn't make sense.
Same thing with the Split Entities function in a sketch and splitting a circle. You have to split the circle twice, or the first split just disappears.
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