Draw outlines of a VDB

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I want to cut out the outline of an organic 3D object (VDB) with a laser. For this I need the outer lines of the top view.

Unfortunately, after the projection (Ray) onto a grid, it shows 1000 lines, but I only need/want 2 - as shown in the example in the picture with polyexpand.

Does anyone have an idea how this could work)
Thank you for thinking along!

Attachments:
vdb-outline.hipnc (118.0 KB)
Unbenannt-1.jpg (587.0 KB)

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Hey markus81,

I modified your setup a little bit.
take a look.

Cheers
CYTE

Attachments:
vdb-outline_2.hipnc (127.8 KB)

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