Add pipe to vertex of 3D body

[zhou6PQMNS]

This is a design for 3D printing.

I have a polyhedra (rhomboid pyramid: rhombus base + 4 triangular faces) that is inverted and shelled out like a cup. I want to add a luer lock port that goes to the vertex of the polyhedra for injecting fluids. In Fusion360, if I extrude a tube, there's a tiny bit that juts into the interior that I don't want.

Close-up:

An failed attempt at another solution:

I had also tried a version where I made a pipe and then combined it with the polyhedra, but then I get the issue that the pipe doesn't penetrate the wall. I had expected that after combining, I would get faces that I could delete to create the hollow channel that extends into the interior, but no success. I no longer have the CAD file for that version, but here's a photo of the 3D-printed result for your reference:

 

I've been wracking my brain on this. There should be a super simple solution, but it's escaping me. Would love to get some help.

 

 

[laughingcreek]

is the result in the attached model what you're looking for?  export your model as a .f3d and post it to the forum to get some help with your process. 

[zhou6PQMNS]

@laughingcreekyours make sense. I tried the same extrude action on mine, but I'm not getting the desired result. Attached is my file. Thanks in advance!

[wersy]

I didn't quite understand it, but maybe it's a little closer to the point.

[etfrench]

Just use the Split Body command to remove the excess. 

1. Start by making the tube a separate body.
2. Split the polyhedra using the flat face of the tube.
3. Split the tube using the inside faces of one side of the polyhedra.
4. Remove the excess pieces of the tube.
5. Join all of the bodies.

Image is before joining the bodies.

[zhou6PQMNS]

@wersythank you! Building on your design, I want the end of the loft to have a luer quick-connect fitting (the threaded part is the important aspect). I imported a design for the luer and adjusted the lofted piece (the part that you designed) to have the same ID and OD as the luer design. But I'm not sure how to combine them. Attached is my file.

Another option is to take the luer design and make it longer and then connect it to the tip of the rhomboid container.

At the end of the day, the photo below is what I'm trying to recreate:

 

[wersy]

There is no luer quick-connect fitting in the file you uploaded.

[zhou6PQMNS]

@wersyshoot, sorry! Attached is the correct file.

[wersy]

These adapters have a specific shape.

You also need to know what the counterpart looks like. Without precise information, the connection will neither hold nor remain tight.

In addition, the funnel must be given ribs. Without sufficient stiffness, the part will wobble when printed.

Oh sorry, I just noticed, it is the femal part you want to insert.

[wersy]

Before making a sensible suggestion, you should consider whether the funnel has to look exactly like this.
The sharp corners are extremely unfavourable for printing it.
In addition, the tip must be wider at the bottom to make a reasonable passage to the connection.

[wersy]

You could make like this

And avoid to move sketches and bodys.