Random rectangles bug when doing Make2D

I’m trying to do Make2D on my model. Just selecting everything and performing the command in this view:


These are my settings:

Normally make2D has been working fine, but recently I am getting this strange and useless output when I do it:

After seeing this happen (repeatedly) I tried Make2D in another view that I know has worked in the past. In this instance I did get the output I was looking for, but it also had these strange lines in addition to it. This hasn’t happened before.

Not really sure what’s happening.

Hello- please post a model or send to tech@mcneel.com, with a link to this topic in your comments…
Is the geometry very far from the world origin by any chance?

-Pascal

I had this same problem yesterday - Rhino 8 for Mac. The main problem was an open polysurface that I was cutting through with the clipping plane. (There might also have been a problem with unexploded blocks also on the clipping plane). The fix was simply to close the poly.

Hello,
Was there ever a solution for this? I am experiencing the same thing on Rhino 8 Windows. A clipping plane that previously worked is now outputting these rectangles as well, so it’s not one specific object or clipping plane. None of them work now suddenly.

I also copied my objects and clipping planes in the same spot into Rhino 7 and it works fine.

Hi Em -

Please post both the output from the Rhino SystemInfo command and a simple 3dm file that shows this behavior.
-wim

I have also had this issue recently (Rhino 8 SR8, Windows 10 Pro). It’s a hard one to pin down, but attached is a file that displays the issue. Running Make2D in the right viewport (it has a clipping plane enabled) produces an extra square that shouldn’t be there.

It appears to be related to having a shaded view turned on in the viewport you are running Make2D on. Setting it to wireframe seems to fix the problem.

As mentioned above, capping the polysurface and also exploding first both fix the problem too.
Make2DBoxes.3dm (60.1 KB)

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