Deleting a hole messes up object

Rhino Rhino for Mac
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1

Im trying to delete a hole in an object (the one marked in orange) using the “Delete Hole” command.

Screen Shot 2016-06-09 at 14.25.29.png1306×1028 256 KB

But when I do that, the entire object is messed up.
Screen Shot 2016-06-09 at 14.25.48.png1324×982 237 KB

How can I delete that hole?

I’m using Rhino 5.2 WIP 5C230w.
LattePanda_Gehäuse_B_SZ2.3dm (2.9 MB)

2

Hi benjykid - the object is somewhat ‘messed up’ already - look at the inside of the box by that hole - see how there’s a surface blocking the hole? Maybe that is what you are trying to fix? ExtractSrf and Delete this surface and the smaller one below, and do the same for all the holes along that edge. Then ExtractSrf the top and bottom faces of the top of thr box. Delete the hexagons for the holes you don’t want, then Untrim the trims in the top and bottom faces. You can then Join it all back up and Cap to close any planar openings.

LattePanda_PG.3dm (1.5 MB)

-Pascal