3dsmax: my bones stretch when I rotate :(

[rmmt]

This is a very odd problem and it happens to some bones whenever I rig. To fix it I have to rig it again, then envelope. I'll be making many models in the future so I was hoping this is just some option you can tick off, or a procedure I should know about so I can avoid this. I take the longest when I rig

Attached are 2 pictures one before I rotate the thigh, and one after.

[MikeYork]

Can u post a wireframe of it???? Maybe I can help. Also if u go to photobucket.com u can use them as a image hosting site that way we can just see what u are talking about without having to click two links. Just a suggestion though

[rmmt]

thank you

here, one link so it's one click.

[Clalan]

how do you set up your bones to fit the mesh? do you use the scale tool to adjust the length? non-uniform scaling on bones will cause this type of problems. the easiest way to adjust your bones to the mesh is by moving the pivot points. don't know if this is indeed what happened, but that's my first guess.

[rmmt]

Actually it is very possible that I used scale here.. I hope that is the reason why. If I already created the bones, let's say of an arm, and I find out the upper arm bone is short, how do I lengthen it then? Is using the scale tool ok as long as I scale it uniformly?

[olli96]

use the bone tools (Character -> Bone Tools) and adjust the bones in Bone Edit Mode, after you are done, open the object properties rollout and select all bones in your character and press on reset stretch and reset scale.

Olli

[MikeYork]

Olli93 is right on the money if that doesnt fix it im not sure what to do. Are u using a biped or bones sorry if that is a dumb question> I just need to clear that up in my head

[rmmt]

I believe they are bones. Biped is the one of reactor right?

Ok, great, the reset scale is one easy way to fix it. Thanks for the help!

[Traxxas]

I also just had the same problem but mine was a mechanical object, what I did was Hierarchy tab and then the Link Info, then select the object and turn off the Inherit scale check marks for XYZ. I tryed reseting for mine and it ended up in a funky position. Hope that helps for the next person to.

[jlg1980]

Yeah I've run into this type of problem before. Basically 3d Max doesn't like the way you linked your bones and so when you go to rotate the bone it deforms for some retarded reason. You don’t have to re-skin it but I would de-link everything and link everything from the outside... inward. So for the legs… grab a foot and link it to the lower leg bone… link the lower leg bone to the upper leg bone then… link the upper leg bone to the hips. You might need to create a dummy in certain areas. Like you might have to create a dummy for the hips. So everything will link down to the hips but the hips will be link to the dummy. The dummy should have the same coordinates as the hips. I hope this helps.

[rmmt]

THanks guys! I know this is late reply hehe..

[Tiffany]

Ooh, I was just having the same problem. This really helped alot, and my problem is fixed, I think. XD

[SwattonA]

Hi Guys,

Just wanted to say thank you, i was having this issue and this really helped.

Regards