This was not created by me but by a whole community.

I initially had trouble picturing the assembly. I'm simply adding this here so people can view the design fully assembled connected with the BoM. The viewer can be used to click on parts, but you can also see a link to the object within the Bill of Materials (the actual parts that need to be 3D printed and/or milled).

Also, hopefully, some people in the 3D printing community will be interested to contribute to the design at https://opensourceventilator.ie

While it is possible to add "issues" to this design, If you can, please sign up there instead of interacting here. Also, posting "I made one" here is great, but please do get in touch on Slack via opensourceventilator.ie.