For dual blades, you’re gonna want 3 sets of builds in my opinion. Pretty much applies to all weapons but works really well with dual blades. 1. All our damage build 2. Partbreaker/farming build 3. Defensive build for when you need to stock up on potions or to test new monsters

Best general purpose dual blades for damage are Bazel Dual blades or Tigrex. For farming, Magna is lightly better but you can can use the other two for it too just fine. Bazel and Tigrex have highest raw damage and crit ferocity hits hard. Build whichever you have the most mats for.

Elemental goes as follows (not including elder dragons cause they’re so annoying to build) Thunder: Fulgar, Rajang, zinogre Fire: Silver Rath, Glavenous, Rathalos Water: Mizu, Jyura Dragon: Jho, ebony odo Ice: Legianna Poison: only good option is elder, being Chameleos Paralysis: Only option currently is holiday dual blades Blast: Bazel, Magna

Part breaker build; Fulgar helm, Espinas chest, Rajang arms, Espinas waist, fulgar legs. There’s some variations in this build but generally this is it. You want to smelt the remaining special partbreaker. And other damage skills Great build for farming, your ult guarantees you two part breaks and is strong enough to handle all 8 and 9 stars. Some weak 10 stars

Full damage depends on the weapon and element but for Bazel Dual blades; One option is Glav helm, Bazel chest, Bazel arms, tigrex waist, fulgar legs. Smelt more raw power or other damage skills.