When in doubt, I’d err on the side of treating palladium like
platinum. Use welding glasses when you solder using high temp
solders, use a ceramic board and a solder pick recommended for
platinum, use an oxidizing flame when soldering and try to avoid
Platinum is very susceptible to metal contamination because it’s
high melting temperature will fuse foreign material into the alloy
rather than flowing around it. Because of this you’ll have little
problem using a propane/oxy torch with palladium or plat. as long as
you use an oxidizing flame. Never use acetylene, there’s too much
carbon even with an oxidizing flame.
Palladium can be a little sticky when fabricating, especially when
drawing it down (an educated guess here, carbide drawplates are
probably better than standard steel ones). Palladium will oxidize
(and it may require more aggressive removal) and it probably isn’t a
candidate for fusing, though on the last point I’m making another
Hope this helps.