inset drying box cap

Inset cereal box cap. After trying some of the models that claim to support the pc4m10 pneumatic adapter I thought I would make my own. I did do some research on the pc4m10 and it is mis-labeled. Anyways, here's the model and it will thread the pc4 1/8" adapter without any post processing.This model mainly supports https://a.co/d/32ftkSZ, however, if your 4l container has a 60 mm opening, which seems to be standard for round openings, it will probably work.