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How to cut 3D CAD to have 2D "sketch"

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Old   July 12, 2019, 17:28
Question How to cut 3D CAD to have 2D "sketch"
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Jean-Frédéric
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Hello,

My problem is simple, I just want to cut this 3D part in two, in the middle, to obtain a 2D sketch.... May it obvious, but i didnt find how to do :/

body.png


Thanks!
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Old   July 12, 2019, 20:18
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Slice the bodies with a plane, create a sketch on that plane, then project the edges from the slice onto the sketch.
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Old   July 14, 2019, 11:45
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Really thanks, it works !
But now i have another problem, its completly impossible to extrude :/

Extrude 1 : Wire Body created from Sketch is invalid.

Ive check many times my sketch, and the wire is totally closed (all in blue or black), but i have 2 point undelible, may its the problem?

The sketch:
1.jpg

The 2 points:
2.jpg
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Old   July 14, 2019, 12:28
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I resolved my problem, i hidden the curve ^^'
So i duplicated the sketch 1, the curve appear, and i delete it, (and also the sketch 1)
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Old   July 25, 2019, 10:26
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Quote:
Originally Posted by me3840 View Post
Slice the bodies with a plane, create a sketch on that plane, then project the edges from the slice onto the sketch.
And then find out that sketch contains open loops - although a closed loop of edges was projected, aha.

Projecting anything more complicated than a box, not to mention complicated B-Surf, - is a risky operation in Star since 3D-CAD Modeler is a bug nest.
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Old   July 27, 2019, 10:17
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For sure, I spent a little time to reconnect cured curves, but I success! Know it works
But I want to do in 3D now, I have the car model, but a lots of body and sheets
Is there any tools to """wrap"" the exterior volume?
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Old   July 27, 2019, 10:19
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Or may I should create a new topic 🤔
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