How do I make an off sim structure?

[Rolig Loon 23,189]

It's quite easy.  As long as the root prim of your linkset is on the sim, the rest of it can hang off the edge.  So make a monster off-sim structure if you like,  but let its root prim be a small, transparent prim that you set on the sim itself.  The only really limitations are the linking limits of linksets (number of prims and distance between them).  It doesn't make any difference whether the struicture is made of native prims, sculpties, or mesh.   A linkset is a linkset.

[Rolig Loon 23,189]

It's quite easy.  As long as the root prim of your linkset is on the sim, the rest of it can hang off the edge.  So make a monster off-sim structure if you like,  but let its root prim be a small, transparent prim that you set on the sim itself.  The only really limitations are the linking limits of linksets (number of prims and distance between them).  It doesn't make any difference whether the struicture is made of native prims, sculpties, or mesh.   A linkset is a linkset.

[Lindal Kidd 12,773]

Rolig is absolutely correct.  However, please remember to use off sim structures responsibly.  These things are really intended to stick out into the void...areas beyond the boundaries of a private region where there is normally nothing at all.

If your off sim objects stick out into somebody else's sim, they are likely to be upset with you.  If the sim belongs to Linden Lab, the area is intended to be freely navigable, and sticking reefs and things into that space is also frowned on.

[Ceera Murakami 243]

I'll add one other point to Rolig's fine answer. Since the root prim of the linkset has to be in the actual sim, (and on your parcel), the prims / land impact for the off-sim stuff still count against the prims used by the parcel that the root prim is on.

[Conan Horan 7]

I was curious how you make them as well. I've asked the creators on the ones on the market and they won't share that knowledge. And it isn't as simple as a root prim needs to be on the sim. there is the linking distance limitation.

These sim surround makers, i see ONE root prim on the sim, then the distant sim surround 200 meters away.

Plus isnt there a size limitation on uploading mesh? like 64x64x64?  I see most of these surrounds quit a bit larger than that.

[Rolig Loon 23,189]

@ Conan --

You can't rez a prim or create a mesh object that will exceed the 64m limit, but you can certainly use a megaprim.  You can still find megaprims on the market that are region-sized or larger.  Just remember that megaprims are a hack and therefore unstable.  You can slice, hollow, twist, or taper a megaprim, but if you resize it in any way, it will snap back to its default size -- probably 10x10x10m.

[Conan Horan 7]

How do you link them to a single root prim 100 + meters away.  Look at Landscapes Unlimited products. he has his partial sim surrounds quite a distance away from the root prim.

[Rolig Loon 23,189]

You don't need to. If you cut and hollow a 256 x 256 x 8 (or larger) megaprim, you can keep its center on your region without needing to link to anything and still have a texturable surface more than 100m away.