bolean and combine
 

what is the difference between bolean-union and combine

Boolean creates a single continuous mesh object. Combine places multiple objects under a single shape node, but does not make them a continuous mesh. After combining you may still need to merge vertices or edges to join the meshes.

so when i use bolen, i dont need to merge vertice. ex:(cartoon dog tuto)if i place one of his leg in his body and i make bolean-union,i wont have to delete the faces that are in the body...

what is a continuous mesh object... cuz i think i dont undestand well

Lets say you have two poly cylinders that are NOT intersected and you combine them. Now when you select one, the other is also selected because they are part of the same shape node. However, you can still plainly see two separate cylinders, so there are two separate meshes. In a single mesh, everthing runs together, there is no separation like that.

Boolean will omit the faces that are no longer needed. i.e. those inside the union area so that the result should resemble two objects welded together to from a single surface area.

thanx a lot for that information:beer: