Great advice, Landru. Just what I need, since I am not familiar with designing
for 3D printing (I normally design for casting, machining, injection-molding; and while everything I do is 3D printed as a prototype, I leave the details of how to make that happen to the service bureau). I understand why you need to add that inside chamfer to the transition, but I wonder whether it will add a lot of unnecessary weight. So I hollowed it out as can be seen in the drawing:
Is this okay? Naturally, it's easy enough to delete that. For that matter, the chamfer itself could be raised to the upper contour of the hollowed section; would that be okay?
Brent, Landru's suggestions will allow me to add the one inch long shoulders you want while still maintaining a z-height of less than six inches. But before we go a lot further, you need to find out who will be printing this, and see what their limitations are. To make the model complete, I'd like to finish the boat tail and the nose cone, and I need to know what the size limitations might be.
Anyway the new files for version 2.0 are
here.
I believe Landru will print it for compensation.
Landru: If you think this is a good part and would like to add it to your library of 3D printable parts, please feel free to do so under the
Creative Commons ShareAlike license. I can also make it to different scales (matching standard body tubes, etc).