How to rescale a object3D to a desired size.

[EgonOlsen]

No, there isn't. If you want some things not to be set, reset them after cloning. About the scale-thing: As long as it works, all is fine!

[eye1]

Another question?

When I merge two objects into one. How do I position them before merging them?

[EgonOlsen]

Merging in done in object space, so transformations in world space don't apply here. If you need an offset, you have to make the translation permanent in object space by using Object3D.translateMesh();