Why do Max bones stretch?

[marktsang]

go to the hiearaachy panel and turn off dont affect children, or got to tools bone tools and turn off bone edit mode

mark

[PEN]

Are you rigging or animating? If they are doing it durring animation when you rotation a bone this would be caused by a non-uniform scaling of the parent bone at some point in the rigging stage. This is a bit nono and should never be done.

If it is when placing joints when rigging and you are moveing a child bone and the parent bone is stretching, this is normal and what else you you expect it to do? Press reset stretch after you are done placing them so that you return the stretch matrix back to 0.

[Yourworstnightmare]

Are you rigging or animating? If they are doing it durring animation when you rotation a bone this would be caused by a non-uniform scaling of the parent bone at some point in the rigging stage. This is a bit nono and should never be done.

If it is when placing joints when rigging and you are moveing a child bone and the parent bone is stretching, this is normal and what else you you expect it to do? Press reset stretch after you are done placing them so that you return the stretch matrix back to 0.


I'm pretty new to rigging with Max bones, I would always do it with a biped. While I was setting the bones I did scale them in only one axis, but I did this for the hand too, and the hand bones don't stretch. So this might be the problem. Where is the reset stretch button, I can't find it.

[PEN]

You need to go back and delete all the bones that you have scaled, never, and I mean never, for any reason, scale anything in any hierarchy.

Biped is a closed system that allows that work flow, you can't do it any where else. To change the length of bones you need to turn on bone edit mode and Move the child bone or, you can select all the bones and turn of Freeze Length in the bones tools dialog and then Move the child bone.

I susgest that you do all the tutorials, although they might not tell you that:S

[byte_abit]

sorry to protrude in the thread, but can anyone tell me why edit bones sometimes distorts the the objects that are supposed to edit?

here (http://www.freewebs.com/bit2bit/editBones.html)are some screenshots

and why can't i also refine, that is divide those bones?

[scrimski]

Maybe you scaled the parent object, a dummy or parent bone or whatever. You have to reset the transformation or scale aof the parent object, if it doesn't work, try ResetXform, if it stil doesn't work think abot doing it again and avoid scaling of any object inside a rig.

And for your second question: I don't get get your problem, could you explain that?

[byte_abit]

well, i meant to a a twist bone, for rotating the wrist, i think the solution is to model a polyObject around the area to twist, use to skin the model, and lookat constraints (with the chilb bone as the up-vector), as paul neale (PEN) very well explains. thanks anyway.

byte_abit

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