Here comes the pain:
The def is 2 parts: the easy (for kids) and the tricky (for the real men).
Using : Topologizer, ExoW, IntraLattice, WB (Catmull-Clark) + the clean lines thingy (K1/K2).
As the values are … ExoW works (but don’t bet your life on it).
Thicken_TestUser_25A.3dm (198.3 KB)
Thicken_TestUser_25A.gh (22.2 KB)
The liquid part is slow: meaning that set the path to none while you are after your Graph. After that > Ave, Imperator, morituri te salutant.
For the record you can use TSplines on the Graph (but is even slower).