I was going through the tutorial for the Creation Kit when my roommate asked if there was a way to make illusions in the game with the Kit. I haven't seen anything like that yet in the tutorial and was wondering if there was a way to turn off the collision of the object so that it could be walked through, fallen through, etc. I know there is a command in the console for the game to turn off collision but I was curious if there was an option for it on the properties window for object.

I'm also trying to do this; it looks like someone had the idea to use NifSkope to remove collision data from the object but I'm having trouble following the tutorial.
http://www.gamesas.com/topic/1352637-turn-off-static-object-collision/page__p__20384273__hl__turn%20off%20collision__fromsearch__1#entry20384273

This is from a quick tutorial that someone posted for me on the Nexus.
Very easy to follow. He wrote -

But here is how to remove collision planes:

Items you will need:
- Nifscope (latest version)
- BSA unpacking software (i used BSAopt)
- nif file for the object in question (easiest way to find out what it is, right click on the object in the object window, go to edit. on the window that now pops up, there should be a field labeled "model" and a path name. that will tell you where the nif file is specifically located when you try to navigate to it using a BSA unpacker and BSAopt allows you to unpack specific items.)

1. Open the nif inside nifscope.
2. If you do not already have the block list up on the far left, hit F2.
3. Collapse the line labeled "BSFadeNode" by hitting the arrow next to it.
4. next there should be a line labeled "bhkCollisionObject". this is the line that holds information for the collision geometries.
5. you can either select this line, hit CTRL+Del to remove it or right click on it go to Block->Remove.
6. Click save as to save your work.

Again this will remove the entire collision geometry.

You can read the full post here -

http://forums.nexusmods.com/index.php?/topic/629748-invisible-floor/

Hope it helps

[Edit] Just read that you want to toggle collision. Maybe you could do this and place one object on top of the other identical object. Then link an activator to toggle the object with the collision off and on, leaving the object without collision in place.

Thanks Tamb0!! That worked beautifully!

If someone could help please. So i removed bhkCollisionObject from the nif file i wanted. I saved it and all. How do i repack the nif into the original bsa? I keep searching online everywhere and it seems to be the common sense step no one describes because they all just know. So I am at a loss. Any hel would be much appreciated.