Hi there,
This is Bogdan from Romania.
I'm a mechanical engineer, specialized in the industrial robotics, 3D modeler and designer.
I have over 15 years work experience, designing, prototyping and launching different devices/systems across multiple industries.
I could help with your project, but I really need more details/info about.
Your rough sketch need a lot of details, but we could discuss about.
I need to know what material you want to use, the dimensions of the door, and how you want this chamber to be made (welded, or assembled with fasteners).
For any other questions, you may open a chat room here and we'll discuss about the details.
Regards
Bogdan