IK and symmetrize option created this strange spike on the knee

[consummatumest]

Hello,

I am doing Section 5 of the Complete Blender Creator course, when I applied the armatures to my character. I have this weird spike formed on the right knee. I am grabbing left knee’s pole moving left knee but I have this spike on the right knee as can be seen below.

Same spike visible if i move the target_l on the right knee.

Do you have any idea what I am missing here? I’ve watched the video several times and I assume i did everything properly

Thanks in advance

[umishrak]

can’t actually visualize where the problem is !

[FedPete]

Check the weight paint. That’s the color map to see how much influence to bone has on mesh parts.

[umishrak]

If this is the problem (in red circle) it can happen for two reasons

1. Bad geometry - check if there is any double vertices at the location

2. Bone alignment - make sure the bone is slightly diagonal at that location

[FedPete]

@umishrak

Bad geometry - check if there is any double vertices at the location

Good observation!

[NP5]

Could be reversed normals in the area or as said just bad geometry like doubles, an inside face, etc.

[consummatumest]

but I’ve created this mesh with mirror modifier how could there be double vertices on the right knee while there is none on the left?

I guess there are no double vertices right?

[umishrak]

and you applied the mirror modifier, right ?

you have checked for the alignment of the bones ?

[consummatumest]

now I’ve apllied the mirror modifier but still there is that spike on the right knee, even though I am controlling left knee right knee seems affected by it.

Could you elaborate this comment?

1. Bone alignment - make sure the bone is slightly diagonal at that location

I’ve changed roll value on the calf_r bone to 180degree from -180degree to match with calf_l but still I see that spike on the right knee

[umishrak]

then it is beyond my comprehension.

however this is not a problem of roll value

I could give it a try, if you send us the file

[umishrak]

can you please send us the shots from the sides

[consummatumest]

I guess you could download from this link
https://drive.google.com/file/d/1TZWEg1_ugc_KLNY0dqZqps9kN-miXXDb/view?usp=sharing, https://drive.google.com/file/d/1XEcPznzJxVctfJPvScZincg6KTqgrpB2/view?usp=sharing

thanks for checking

[umishrak]

I need access to this to download.

Sent you the request

[consummatumest]

it is done

[umishrak]

Still not able to download

[umishrak]

Ok Got it !

you had 2 links

[consummatumest]

Yes i uploaded the blend1 file as well as I’m not sure if it was necessary or not

[umishrak]

This probably has caused you the problem. You can try after setting the Scale and Location to 0.

[umishrak]

and because of this the Armature has gone deformed

You try to redo a clean Rig After applying Scale and Location

[umishrak]

Check the deformity goes when I switch off the Armature. But with that the Armature goes wonky