Prosthetic socket

This is a fast proof of concept on how to print a prosthetic socket.
There is a soft part in contact with the skin(filaflex, etc) and a stiff part to hold the rest of the arm (to be designed).
Three empty spaces have been managed within the bottom of the stiff part, they are meant to receive a bolt during the printing(pause the print)

Please share your feedback, I'd be pleased to improve it or manage a way to adapt it for somebody.