Specific Item / Weapon and Special Materials

[Dafydd]

Can you make Specific Weapons, Armors and Items with special materials, even if the description does not mention a material?

I have a low strength character I want to get a Staff of Entwined Serpents and making the staff darkwood would help towards reducing my encumbrance issue(s).

[Nefreet]

Sure, assuming you mean for a home game. Talk to your GM.

For PFS, no, as covered by the stickied "How to Upgrade Your Gear in PFS" thread.