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For questions about using IK in rigging. Inverse Kinematics is the opposite of the default Forward Kinematics. Instead of posing each bone in a chain from the base to the tip, IK solves the rotations of preceding bone(s) in the chain automatically based on the position of the IK-constrained bone.

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25 views

Activating IK on Existing Armature

How do I activate IK (Inverse Kinematics) on this rig? I feel like it has the necessary bones. I appreciate your help. I would really like to enable crouching and gyrating of hips for dance animations ...
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1answer
18 views

Bone won't bend in quadruped leg

So I am rigging a fox mesh, and the method I used of inverse kinematics isn't working like it has on numerous quadrupeds I have rigged. So the leg has four bones in it. Now I put the IK on the second ...
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9 views

Align orientation in Pose Mode

I'm trying to do a simple manipulation that I'm doing every day at work as a professionnal animator. My experiance is with Motion Builder and 3dxMax, but I'm learning Blender on spare time. I just ...
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1answer
22 views

Copy rotation rotates through wrong axis

I want to rotate hand bone when I rotate IK bone as well. So I decided to using Copy Rotation constraint. Here's how looks like: Nothing special, important thing is that Hand Bone has Copy Rotation ...
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15 views

About local space in action constraint

As you can see the picture below, if you change the rotation value by rotating the parent object (box), the rotation value of the child object (monkey) is retained. Child objects have their own local ...
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1answer
1k views

How to rig a cartoon-style hose limb?

I was wondering if anyone knows how to set up a hose-like, cartoon-type limb like in this picture? My current setup for my model's limbs uses Inverse Kinematics and actually works quite well for the ...
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1answer
20 views

IK Constraints Swinging Around Wildly

My IK's are out of control. I've set up enough simple IK's to know how to do it correctly and I have not idea what's going on here. I've tried redoing the IK's, recreating the bones completely, but ...
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16 views

How to use spline ik with curve with modifer applied? (How to use splike ik, for snake movement animation ?)

I try to use Spline IK Constraint to make "Snake move". I have armature with 4 bones, and I apply Spline IK Constraint to it. Its don't want to work with curve after modification, it uses curve ...
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12 views

Rigging, how do i keep my target at the bones position?

in my project, i want my target bones root(1) to always have the position of the given bones tip/root(2) even if i change my pose with ik, but i dont know which constraint would achieve it. And i ...
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0answers
33 views

Object doesn't get motion blur in several frames

I made a robot animation with IK rig. After rendering, as you can see on image 2 & 4, the robot didn't get motion blur at all but the furniture still get the motion blur. image 1 & 3 works ...
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1answer
28 views

How do I properly fit this tail with IK?

I have this tail rig that I'm using IK to animate with. I'm fairly new to rigging and IK, however, I've come this far: The problem is I want to have more control over the curve that the IK Target ...
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1answer
13 views

IK constraint causes crazy global rotation

I was following a rigging tutorial (first minutes of third video) on a simple model I made earlier. But when I add an IK constraint on the bone shin.L to have the bone foot_IK.L become an IK ...
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13 views

How to make two bones rigid

Hello, I have rigged two reciprocating motion actuators just using bones. I would like to connect two actuators together with two bones and add IK constraint and have the connecting piece lean certain ...
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1answer
25 views

Incorrect IK behaviours

I am rigging a robot for some personal training, and I got into a very weird issue while rigging the legs. Here are my two foots, both are parented to the right bones, rigged to their respective ...
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21 views

Switching from IK to FK-losing pose

Learning rigging and ran into this whole ik/fk switch thing which is confusing. I rigged a leg using the usual IK(heel influencing shin>thigh), I keyframe a leg raise and see that to get the exact ...
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1answer
21 views

Rig with sticky feet and hands, how do I create arm swings? (ex: playing tennis)

I've been using this tutorial ( https://www.youtube.com/watch?v=Q9f-WVs3ghI ) to create sticky feet and hands for my character rig. Sticky feet I've noticed is pretty standard for character rigging ...
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3answers
47 views

Why does the elbow turn the wrong way?

I'm doing a character for a (very) low poly game. Since I already had a very basic IK rig laying around, I figured I'd adapt its armature to the recently created character. However, even after ...
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1answer
10 views

Made the leg IK bone, tried to attach the upper leg bone to the pelvis but after attaching it, the body rotates a little bit

I'm relatively new at rigging in Blender, and I tried to rig a humanoid model that I made. Everything went fine, but after finishing the leg IK bone, I tried to attach the upper leg bone to the lower ...
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1answer
93 views

Simple Inverse Kinematics for a slider?

I tried recreating something like this: https://www.instagram.com/p/Bk1tq1DgMRV/?taken-by=flvio.cc The head can move on the x and y axis. The model itself is done, but I just want to move the head ...
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9 views

Display rotation of certain bones in a kinematic study model

I'm creating industrial robot inverse kinematic rig. Is a way to display rotation of a bones after placing IK bone? The best would be a kind of chart thet shows rotation for any of 4 motors like this: ...
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1answer
49 views

Rigify IK Not Working Properly

I've been working in a character during my free time, and I came to the point where I decided to Rig it using rigify. Everything went fine.. Until I tried bending the legs. Instead of bending like a ...
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1answer
12 views

pole targ it does not work as I would like

I'm working ik, and I try to put them a pole targ but this one does not work like I want. I'm using the pole targ to simulate the elbow but as you can see in the picture this nose bends like a piece ...
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33 views

Converting FK pose to IK pose

I have two version of the same character model One with regular FK armature And the other one with IK basic armature How can i pose my model with FK bones and then translate the pose for the version ...
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1answer
29 views

Leg bones twisting backwards when moving leg up

The leg looks fine up to this part: However when I go further up it just twists and flips backward like so: I've scoured the internet and can't find a solution. The pole target offset is at 90 ...
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145 views

How to Add Foot Pronation/Banking to Foot Rig?

Oliver Villar has a foot and leg IK rigging tutorial on YouTube. He covers heel roll and foot roll controls, but only briefly mentions using two extra bones (per foot) to add left and right pronation/...
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8 views

Inverse Kinematics Armature Rotation

When trying to learn how to animate characters today I wanted to accomplish learning Inverse Kinematics. Watched a couple tutorials on youtube, seems pretty straight forward. When I apply the target ...
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20 views

Impossible problem - flipping animation across x axis using IKs?

Ok, While I have tried every solution posted here (mainly the Command - C, then Command-Shift-V to copy with flipped x axis) on how to flip an entire animation across the x axis (it's a walk cycle) I ...
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112 views

Creating a generic IK/FK snap script

I've tried deconstructing the Rigify addon to isolate the script part that handles IK/FK snapping, but so far I've had no luck. Rigify is a very nice tool, but I'd like to get the snap functionality ...
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1answer
38 views

Save ik bones after bake action for backup

Hi how do we save ik bones after baking action? After baking action, normally i’ll delete the ik bones so i can work on another animation in another action. Occasionally, i’ll need to enhance ...
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0answers
50 views

Torus animation rig

I am trying to deal with Blender's IK solving system (though maybe I don't need it at all?). I need to animate torus into a smile-like figure (upside- and downside-"smile" animation will be for the ...
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43 views

IK Pole Target directing to wrong direction

I have no idea why the pole doesn't follow the target, instead, the pole avoid it, i've tried to ROLL the bone to 0 degree. The result still the same.
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1answer
34 views

Problem in using Invers Kinematics

Please help me, how can i fix it ???
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1answer
42 views

How to change Chain Lenght in Inverse Kinematics?

I'm new in Blender. I have a character and I have some problem with his leg. Chain Lenght is 2 in left leg but it's 0 in right leg. I wanted to change it for 2, but my character fell apart. I watched ...
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1answer
96 views

Rigging problem with IK, bone turning

it's my first time doing this and I have no idea what to do. I have seen a lot of youtube tutorials and at some point my results differ from the video even if I followed it exactly. As you can see in ...
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0answers
121 views

Controlling robot servo arm (in real-time) via 3d model in blender

I am trying to create and control a robot arm (made of servos) via it's 3D model. I am big fan of Justin Dailey's work -- he was one of the first few people to accomplish this but his 7 year old ...
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296 views

How to setup IK Arms with upper and lower arm twist bones?

I have two bones for the upper arm, and two bones for the forearm. This is to assist in proper deformations when rotating the elbow and wrist, respectively. (ie: Using forward kinematics, if I want to ...
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2answers
51 views

some vertices don't follow bone chain with Spline IK

I have made a complex ribbon-like structure (DNA strand), rigged it with bendy bones and made it follow an Archimedic spiral. In one strand, this worked perfectly (1st image), in the other some ...
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13 views

How do I set up a targeting bone in BGE?

I'm fairly new at Blender, and trying to make a FPS game. I watched a simple tutorial on how to make a turret that will track an empty, then I kind of modified it to make it fit my needs. Each of ...
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16 views

Need help with bone constraints for creating joints

I have this rig that has an arm composed of 3 bones. I have an IK bone set up already to control the entire chain. I would like to use the Elbow.L bone to create a pole target that acts as a joint, ...
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78 views

Exporting COLLADA model does not preserve kinematics (joints, links)

I am trying to edit the materials of a robot COLLADA model. Here is what it looks like when I import the .dae file to Blender: The problem arises when — without ...
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34 views

How do I make an IK solver track the head of a bone rather than the tail?

Like the title says, I need my IK constraint to track the head of a bone, rather than the tail.
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0answers
31 views

Arm flips to other side when lifted with IK bone

Im new to blender. I made an arm & tried to rig the arm, problem is when i lift the arm using IK blow after certain point whole arm is flipping to other side. I did Bone rotation calculation to ...
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74 views

Inverse Kinematic Limitation does not work properly

My problem: The limitation for the inverse kinematics does not work on the last bone in the chain anymore actually. When I set it up first there was no problem, but since I added some action ...
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0answers
149 views

The Mixamo armature does not accept the IK chain for the shin/feet

I have a problem with the rigging that I don't know how to solve. I'm following the tutorial "battle scene in blender" on Youtube. He says that it's useful to use the IK chain for the feet,so he ...
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1answer
170 views

How to best animate a licking tongue?

I'm trying to animate a tongue that is licking an object. First I thought the tongue could be a soft body colliding with the object that it is licking, however, with that many parameters and options, ...
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0answers
29 views

Hand movement with Inverse Kinematics

I am trying to make a stick figure which has a hand that can be pointed. But when I move the bone it is supposed to point at it just bends and points downward. How do I get this to work?
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51 views

Is my Inverse Kinematics bone working correctly?

Take a look at the bone selected. Now take a look at the selected bone. Shouldn't it be moving down as shown in the video tutorial I have been watching? https://youtu.be/jp_SqjB0468?t=14m22s
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1answer
121 views

Is my Inverse Kinematics not working correctly or is it working correctly?

Here is how it looks like when it is on the ground. Here is how it looks like when I move the bone up along the z axis. As you can notice the yellow bone moves to the right a little. How do I fix ...
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67 views

Correct forearm rotation for IK rig

I have been having trouble with my IK rig recently, as I have noticed that the rotation of the forearm isn't at all correct. I followed this tutorial: https://www.youtube.com/watch?v=cGvalWG8HBU&...
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1answer
53 views

“child of” bone constraind with ik?

I'm animating a weapon for a game and ran into a little trouble that i don't know how to resolve. What i want to do is have the left hand supporting the gun like a person would, but that hand is ...