GURPS Dungeon Fantasy 18: Power Items

[scc]

Originally Posted by Peter Knutsen

They don't affect it, because GURPS DF is explicitly not about world simulation.

Yes and No. A large part of DF is getting stuff, so accurate rules regarding how this stuff is made is important, even if the PCs can't make it. If the PCs in a DF game you ran found a Psi 'enchanted' sword and wanted to have an NPC sage enchant it more with magic, what would your response be? Is it even possible? Are there special requirements or costs for performing such a feat? How will the 'enchantments' already on it interact with the ones the PCs want to put on it?