Of course, in order to create a dual swords you need to have something to work with, a pair of swords.
Also take into consideration that no artisan will work for free. They need to make their living after all... Running the forge isn't cheap either...
There's something else... You need both swords to be well balanced, otherwise they won't make a good weapon. That's why you can only combine swords of the same grade.
I work only with weapon of grades D and C. If you want something better, you should go to someplace bigger.
Please, keep in mind that any weapon modifications will be lost in the fusion procress.
Are you event listening to me? Of course not, you know everything there is to know.
Also I can't combine swords that are imbued with Soul Crystals, so please remove them beforehand.
Well, choose the swords you want to get!
Check the list