Hi. I ran into some problems when I was trying to rig my model using RPIK handle.
as the image shows, the part of the body that overlaps with the rotation disc gets deformed.
I tried to take out the influencers but selecting the vertices and zero out the influencer in the component menu. but it didnt work out.
I also try decreasing the disc by making the joint size smaller, but it didnt work either.
Does anyone know how to change the size of the rotation disc or the area of influence on the IK handle? or, in general, how to fix it?
Add influence from your spine to that part of body. At the moment you tried to zero out influence from arm, but because vertices couldn't find any other influence they took it again from the same bone.
IK has no influence over mesh. It has influence over bones and bones have influence over mesh. So you can correct it by correcting influence of bones to mesh.