Creating joints between pipes for 3d printing

I have been having trouble trying to figure out how to make 3d printable joints for these pipes. the pipes were made out of the pipe command but the geometry was made from a GH definition.

this is a picture of one of the joints that i need to create a joint for.
I’m looking to make something like this but I need to be able to manipulate the radius of the joint.

Thank you so much! I appreciate the help
MFAH 20190402-model for 3d.3dm (3.6 MB)Truck (97.5 KB)

Did you make a research on internet ? There are some discussion on node generator

And others …

I have but I am not able to make that definition work for some reason…

I looked a bit at you definition, it is not simple to find where you want nodes. For most node generator you will need a clean curve network, the node will be at the intersection of the curve (line) network.
It could be good you extract the line network and you post just that with the tube diameter you want.

3. Attach minimal versions of all the relevant files