Prim Size & Sky Box

I've got two questions..can someone advise..

1. I've just started building and wonder what's the biggest size I can make a prim ? I'm trying to make a roadway and can't make a section bigger than 10 x 10 so does this mean I'm going to have to make the entire roadway from 10m sections stuck together...?

2. I want to create a large skybox (almost sim size)..how do I get it above the max avatar altitude..I need about 500 - 700 m. Also (relating to the last question) how do I make a skybox bigger than 10 x 10...?

Thanks in advance...

1. Yep. 10x10x10 max. (with standard prims.) Use the building grid and your prims will snap together easily.
2.Make a box at ground level. Sit on it Fonzy. In editing box, in height (Z) type the height you want. Make a platform. Create a landmark. Build.

Thanks for that Kornscope..one other question..I'm guessing that there isn't an easy way to create a nice upward curve in the roadway so to produce a gentle start to a slope, other than using a bunch of inner sections of tube. Most roadways I've seen don't even bother attempting to create an upward curve they just snap two flat pieces together and end up with an abrupt change in road angle. I take it there's no way of bending flat sections..?

No to bending flat sections. The closest to that would be a partial section from hollowing out
a cube and choosing circle for hollow section then using path cut to open the hollow section.

However you could use a cylinder and stretch it and path cut it or not. If your delicate about it
you can use a cylinder in conjunction with flattened cubes to make a bend in your road to
ascend and descend.

Then there is always sculpties, but that is a chapter in itself. Search threads for 'sculpted prims' in building section to pursue that option.

You can also go and find existing roads that have already tackled that problem and study
how they did it.

Cylinder..that was the word I was looking for..tube (hah!!)

Thanks Infiniview..yep most road builders don't seem to bother attempting to solve the problem of the gentle slope, though I seem to remember some Linden roads with gentle slopes approaching bridges somewhere..probably the Old Continent.

I've been experimenting and got some reasonable results so far made up from sections..I guess the smaller the section the better (more subtle) the curve. I thought I'd ask just in case there was some technique that would save me prims. I'll have a look at sculpted prims as you suggest..Thanks again

The Tube is actually a great prim to try, particularly if you want to get all advanced about it (as, like I'd just been saying elsewhere, it's the 'advanced cylinder'). Instead of Hollow, you find the appropriate Hole Size. Then you can toy with special options like Radius Delta to tweak the curve to your liking.

More importantly, I tend to think the Tube is just plain more appropriate for this job, as it essentially behaves just like a long Box prim bent into a circle (and textures likewise, which isn't quite true for the hollowed Cylinder).

Umm..going back to the first question..I made a 10 x 10 box..sat on it..set it to 500mm..shot up to 500m..attempted to stand up and promptly fell off

Any tips on how NOT to fall off..?

I've been experimenting with various sections and have been getting quite nice gentle curves (obviously the more gentle the curve the more sections you need and hence the more prims)..but it does seem to be working quite well.

This is why people say to build a smaller prim on top of your large box, and link the two together (select both and hit Ctrl-L), then sit on the smaller prim, before moving the whole object up.

Then again, if you have one of those free "Flight Feather" HUD attachments, you'll be able to fly just fine at any height you want to (assuming flight is allowed on your land).

AAh yes..nice solution..

and..I do have one of those flight feathers..somewhere..probably in my inventory..(like I say) somewhere..I seem to remember using it once!!

Thank you..

A larger skybox is just like any other building - You make it out of prims, max size 10 x 10 each, and max linkset size 32M center to center between the farthest pair of linked prims. To make a skybox larger than 30 x 30, make it as multiple linksets.

Um... do you OWN the whole sim you plan on placing that mega-skybox over? You still have to own ALL the land below what you build - no exceptions. If you didn't own the land below you, every landowner whose land you overlapped could, and most likely immediately WILL, abuse report you for stealing prim count from their land. If you DO own the whole sim... Odds are you'll end up wasting a LOT of your available prim count for the sim making a sky-build that large with normal prims. For example, just a flat floor, 250 M x 250 M, would take 625 prims at 10 M x 10 M size to make.

There are "mega prims" out there that exceed the 10M limits. One of them is, in fact, a single flat prim the size of a sim. But you can't edit or alter them in size, they were made by exploiting a glitch in the building system, and in general their use is considered to be a bad idea, as they are completely unsupported by LL. Megaprims often get returned to the owner by LL or by the sim owner if they seem to be causing problems. I'll admit there are a few cases where careful use of just a few megaprims can be justified, but personally I will not build with them.

Building above 768 Meters altitude is not practical. Nothing can move at that height, and any attempt to move items rezzed above 768 M will relocate the object to no more than 768 M altitude.

Another option is to pop out the standard .5x.5.x5 cube, sit, change z, then change the width and depth of the prim, then stand up. Your av will still be in the center of the prim and when you stand up, you're on top of the prim.

A

You can also get a Flightfeather. That allows you to fly above the max height an avi can get to before losing alititude.

*edit*Oops ^^ , I see someone already made that suggestion.

OK, I'm still curious if you own the entire sim you're planning this mega-skybox to be over.

Before you stand up, edit the box you are sitting on so its 10 m wide in both dimensions, then you can stand up and walk on it.

I've used the 40x40x40 prim for a skybox and it provides a nice big surface to use on top. There's 40 meters of prim below me but so what? It's just sky space anyway.

Here's an idea to use, also. Position a 40x40x40 where you want to use it. Duplicate it and raise the duplicate about 5 meters then make it "Phantom". Then duplicate the original one again and raise this duplicate so that the bottom is even with the top of the "phantom" one. Make the bottom of the last one transparent with an Alpha texture. Now, you'll have a 'sandwich of three prims with the middle one set to phantom. So, what is the purpose of this? Well, to anyone looking at it, they'll see what looks like a single huge prim about 85 meters tall. But, for you, standing on the top surface of the bottom prim, it will appear to be just the original prim for you to build on. ..

It's all about the privacy

Yes, Perre owns the whole sim. (It's a private island.)