I'm glad to see some documentation starting on the setup of the end-caps.
I can't say I'm entirely clear about the role of the syringe. I assume it is to vent the internal chamber to change the pressure differences. So, a syringe is cut at the 0.2mL mark and fused to the internal plastic circle? The syringe tip is left intact pointing inward? Some pictures or a video of this step would be particularly helpful.
Also, it mentions a white acrylic triange, is this in the pdf file on the git hub?