Don't know much about Pd except that it is added to CP's and T64 Ti alloys to make Grades such as 7, 11, 16, 17, 24, and 25 for enhanced corrosion resistance in reducing acids and sour service, and improves crevice corrosion resistance. Usually added in the range of ~.05% to .15%.
"I'm curious if anyone on here has ever welded palladium, and if they can talk about it."
I missed this initial post. Your wording is interesting. "and if they can talk about it" Now if someone had welded it in the DOD realm or more apply an alloy of, that someone would not likely be able to talk about it.
I compliment you on your fishing skills :-)