I was working on Cage's skinning again today, I was having this weird problem with the twist bones, that were messing up the shoulder rotation. Took a minute but I figured it out, the twist bones for CAT rigs don't work by default. You have to change a falloff setting for them to actually twist.
So after I figured that out, I had to re do some skinning on the arms to make them look right with that setting. Shoulder rotation is looking pretty natural now.
I added an extra muscle bone to the pecs, the upper and lower halves of the pectorals have separate muscle bones for a better deformation.
I changed some areas of the model's body, to look better when the arms are moved down and around.
Basically made the shoulders less wide front to back, made the biceps and triceps at the arm pit a little wider. Moved the side of the pecs in toward the arm pits, and Made the side of the pecs upper half bulge out more. All this is fixing a weird gap that was happening when the arms go down.
Getting close
So after I figured that out, I had to re do some skinning on the arms to make them look right with that setting. Shoulder rotation is looking pretty natural now.
I added an extra muscle bone to the pecs, the upper and lower halves of the pectorals have separate muscle bones for a better deformation.
I changed some areas of the model's body, to look better when the arms are moved down and around.
Basically made the shoulders less wide front to back, made the biceps and triceps at the arm pit a little wider. Moved the side of the pecs in toward the arm pits, and Made the side of the pecs upper half bulge out more. All this is fixing a weird gap that was happening when the arms go down.
Getting close


