Yeah, the CAD allows me to output an IGES file, which my prototype source plugs into his ABS printing machine. The only reason I need a drawing is to communicate where and how tight the tolerances will be.
Several have asked about a 60 mm gauge option. My initial thought is that it will definitely cut off air flow. The ID of the barrel is only 71. I have to add 3 mm of material to the radius of the gauge to form the inner barrel. This puts the OD of that barrel at 66. That only leaves 2.5 mm radially for the air to flow through, and in fact less because you have to factor in draft.
That being said, I'm going to model something up and post it for you to look at. I may be able to get around that 3 mm of material requirement.
While I'd love to be able to offer both sizes, the reality of needing two tools to do it will more than likely keep me from doing so. But like I said, lemme think on it a bit. I'll post back.
EDIT: Here's a thought....we could simply remove material from the 52 mm pod after it is molded. This might be something I could do before shipping it. I'd have to make some sort of template. Or, this could be done buy the end user.
The six "legs" should be enough to hold a gauge in place. If we are able to get enough people in a GP, I'll see it I can cannibalize one for this project.
