(Praseodymium ➡️ Carbon ➡️ Carbon_paper ➡️ Paper ➡️ Paper_clip)
Comments
I actually took half a dozen different attempts at this. Tried going via metal -> ductility. Via iron, via steel. Found it incredibly hard overall today.
(Praseodymium ➡️ Metal ➡️ Metallurgy ➡️ Die_(manufacturing) ➡️ Paper_clip)
Notes
This one took so many restarts before I found a good route. I felt like I was in orbit around "Paper_clip" with no way to get there. I thought that going down the rabbit hole of how paper clips are formed would be the best way, but I kept getting caught up on "Wire", which maddeningly does not lead to the solution.
I still think there's a way to do it in 3, but I don't have the energy to try just yet. I'll update if I find it.
Pathing through "Oxidation_state" gives access to a table of oxides at the bottom of the article. In that table is a link to "Properties_of_water" which has a section on surface tension. That section includes a photo of a "Paper_clip" that is prevented from submerging due to surface tension.