forget my last post i just found that when something is a group it counts as a solid but when the same object is not grouped it is an entity. what does this mean?

tankyou. that made perfect sense and i have checked some of my models and found that they are not manifold solids. what were these tools you were mentioning that can fix them and where could i get them.

thanks in advance.

@tig said:

Are your exported objects manifold solids beforehand ?
If not then use one of the available tools to fix them...

Im very sorry but i have absolutely no idea what any of thet means I only have a very limited experience, if it's not too much to ask could someone please explain that in lay mans terms for me. Also I only have the free version of sketchup so I can only export in skp and collada.

Thanks in advance.

I am having trouble using sketchup 8 with the shareware program pepakura, which allows you to unfold a 3d model into paper templates to make it in paper craft. The problem I have is that when I open the sketchup file in pepakura, it works fine, but some of the faces of what I have made are not joined so it will not unfold properly. When I go into sketchup, there is no way that I can find to join these faces. My models are fairly complicated and are not just boxes or simple shapes, so what I wanted to know was does anybody know how to make all the faces joined in pepakura.

Thanks in advance.