Hey Folks! My name is Danny Choo and I'm the creator of Smart Doll.
So, you have already read about Cortex and think you got what it takes to build one yourself? If so you need to watch the following video first.
Some of the Cortex kits come with a shoulder joint that looks like this - we call it the Uni Shoulder Joint. The Uni Shoulder will eventually replace the previous shoulder joint which needed 5 pieces and 6 screws. The Uni Shoulder is only one piece and currently has two screws at the back but they are not actually used and are only there for folks who wish to tighten the torque - they may eventually be removed as the socket has clamping force factored into the design - its kinda cool if I say so myself ;-)
The Uni Shoulder comes in one color which is similar to tea and will be used for all our Smart Dolls. Internal frame parts will eventually be a single color. Ball joints will continue to be matched to the shell color.
If you do have a Cortex kit that comes with the Uni Shoulder then you need to post process the back of the bust - but only if it looks like this photo. If you don't cut off the area marked black then you wont be able to fit the bust on the body. The internal structure is actually not needed and I talk about it in the making of Cortex video.
We do not accept requests to swap parts for "new" components as the previous ones functions just as well. We have actually been tweaking the internal frame over the years and this is nothing new. However, As folks are now building the Cortex kits for themselves they need to be made aware.